TRUSCO NAKAYAMA Dischi（work material：Acciaio generico）

?* Informazioni su tempi di consegna e prezzi

• • In Offerta

  

  "Disco in tessuto" (per levigatrice a doppia azione / abrasivo in tessuto non tessuto)【2 Pezzi per confezione】

  TRUSCO NAKAYAMA

  [Features]
  · Made from non-woven nylon fibers and alundum abrasive grains, thereby ensuring gentle grinding work, suitable for finished products.
  · Attached to the pad with Velcro tape for use.
  [Applications]
  · For removing light rust from metallic products and for glazing.
  · Smoothing out wood products.
  · Tool used: dual-action sander (Velcro type).

  • Sconto volumi elevati

  A partire da∗ ：	4.33 €
  	Prezzo speciale
  Consegna da ：	Stesso giorno

  *Prezzo unitario in configurazione base

• 

  TOKUMARU α【10 Pezzi per confezione】

  TRUSCO NAKAYAMA

  [Features]
  · This product is appropriate for a wide range of uses, and is quiet when polishing and with less vibrations compared to flexible grindstone or offset grindstone.
  · Uses China-made paper.
  [Applications]
  · Grinding and polishing of steel, welding bead removal, rust removal, peeling of paint, polishing of woodwork.
  · Tool used: dedicated electric disc grinder.

  • Sconto volumi elevati

  A partire da∗ ：	26.80 €
  Consegna da ：	6 giorni

  *Prezzo unitario in configurazione base

• 

  TOKUMARU α【10 Pezzi per confezione】

  TRUSCO NAKAYAMA

  [Features]
  · This product is appropriate for a wide range of uses, and is quiet when polishing and with less vibrations compared to flexible grindstone or offset grindstone.
  · Uses German-made Zirconia paper. A product with improved durability and cutting force.
  [Applications]
  · Stainless steel, hard-to-cut material, grinding or polishing high-hardness metal, heavy polishing for steel.
  · Tool used: dedicated electric disc grinder.

  • Sconto volumi elevati

  A partire da∗ ：	46.14 €
  Consegna da ：	6 giorni

  *Prezzo unitario in configurazione base

• 

  TOKUMARU J【10 Pezzi per confezione】

  TRUSCO NAKAYAMA

  [Features]
  · This product eliminates the pricing difference with traditional grindstones while retaining the durability, work efficiency, low noise, and safety characteristic of paper abrasives.
  · A high-hardness material mainly composed of alumina oxide.
  · Uses Japan-made paper.
  [Applications]
  · Grinding and polishing of steel, welding bead removal, rust removal, peeling of paint, polishing of woodwork.
  · Tool used: dedicated electric disc grinder.

  • Sconto volumi elevati

  A partire da∗ ：	35.14 €
  Consegna da ：	6 giorni

  *Prezzo unitario in configurazione base

• 

  TOKUMARU J【10 Pezzi per confezione】

  TRUSCO NAKAYAMA

  [Features]
  · This product eliminates the pricing difference with traditional grindstones while retaining the durability, work efficiency, low noise, and safety characteristic of paper abrasives.
  · Made from super-hard materials mainly consisting of zirconia, an amalgam of alkali and zirconium oxychloride. A shape with sharp points that have excellent durability.
  · Uses Japan-made paper.
  [Applications]
  · Stainless steel, hard-to-cut material, grinding or polishing high-hardness metal, heavy polishing for steel.
  · Tool used: dedicated electric disc grinder.

  • Sconto volumi elevati

  A partire da∗ ：	40.60 €
  Consegna da ：	6 giorni

  *Prezzo unitario in configurazione base

• 

  GP Top TOKUMARU-KUN【10 Pezzi per confezione】

  TRUSCO NAKAYAMA

  [Features]
  · This economy product has performance almost equivalent to GP Top® at a lower price achieved through the improvement of efficiency in the production process.
  [Applications]
  · For removing beads from welding surface.
  · For removing paint and rust.

  • Sconto volumi elevati

  A partire da∗ ：	50.00 €
  Consegna da ：	6 giorni

  *Prezzo unitario in configurazione base

• 

  Disco di carta tipo conico, alundum (per metalli generici)【5-10 Pezzi per confezione】

  TRUSCO NAKAYAMA

  [Features]
  · Tapered base board allows working on a flat surface without digging in, even if work angle is increased.
  · Outer part and central part of abrasive wear simultaneously, so you can use up uniformly all the abrasive.
  [Applications]
  · For peeling black scale from metal, and removing beading on welding surfaces.
  · For rust removal and grinding/polishing of various metals.

  • Sconto volumi elevati

  A partire da∗ ：	51.37 €
  Consegna da ：	6 giorni

  *Prezzo unitario in configurazione base

• 

  GP Top【5 Pezzi per confezione】

  TRUSCO NAKAYAMA

  [Features]
  · All-round type that features an abundant grain size variation to handle rough finishing polishing.
  · There is hardly any strain on the workpieces due to heat or burning due to the air cooling effect.
  [Applications]
  · Metal polishing, removing welding beads, polishing automobiles, hulls and tanks, various types of deburring, and polishing other stainless steel, steel, and nonferrous metals.

  • Sconto volumi elevati

  A partire da∗ ：	30.55 €
  Consegna da ：	6 giorni

  *Prezzo unitario in configurazione base

• 

  "GP Top DX" (Deluxe)【5 Pezzi per confezione】

  TRUSCO NAKAYAMA

  [Features]
  · Not only does it have almost the same performance as GP Top®, it uses special plates, allowing it to be used for about 18% longer than GP Top® (capable of grinding up to 75 mm O.D.).
  · A professional polishing agent, hand planted one by one.
  [Applications]
  · Metal polishing, removing welding beads, polishing automobiles, hulls and tanks, various types of deburring, and polishing other stainless steel, steel, and nonferrous metals.
  · Tool used: disc grinder.

  • Sconto volumi elevati

  A partire da∗ ：	45.28 €
  Consegna da ：	6 giorni

  *Prezzo unitario in configurazione base

• 

  "GP Top 25" (alundum)【5 Pezzi per confezione】

  TRUSCO NAKAYAMA

  [Features]
  · Long service life type.
  · For ordinary metals. All-round type that features an abundant grain size variation to handle rough finishing polishing. Prevents polishing burn, a difficult aspect for elastic grindstone, to deliver high grinding capacity and service life that is 7 to 8 times that of flexible grinding wheels. Cushioning properties keeps impact on ground objects soft when compared with grindstones.
  · Features significant autogenous action and little clogging.
  · There is hardly any strain on the workpieces due to heat or burning due to the air cooling effect.
  · A professional polishing agent, hand planted one by one.
  [Applications]
  · Metal polishing, removing welding beads, polishing automobiles, hulls and tanks, various types of deburring, and polishing other stainless steel, steel, and nonferrous metals.
  · Tool used: disc grinder.

  • Sconto volumi elevati

  A partire da∗ ：	61.72 €
  Consegna da ：	6 giorni

  *Prezzo unitario in configurazione base

• 

  Disco in carta con steli a filettatura diretta, zirconio (per acciaio inossidabile e materiali difficili da tagliare)【10 Pezzi per confezione】

  TRUSCO NAKAYAMA

  [Features]
  · Designed with a special mold to prevent clogging.
  · Noise generation is low, so it can be used comfortably.
  · It can be installed in a single action (screw type). (Disc grinder only)
  · Due to the specialized processing that differs from ordinary methods of polishing cloth production, the autogenous action has been increased, the grinding power sustained, and the clogging and polishing burn reduced.
  [Applications]
  · Heavy duty polishing and metal polishing with disc grinder.
  · For removing welding beads.
  · Excellent for metal polishing of high-hardness material as stainless and others hard-to-cut materials.
  · Polishing, paint and rust removal on aircrafts, automobiles, hulls, bridges, tanks, etc.
  · Descaling and deburring various metals.
  · For other polishing work of stainless steel, iron steel and nonferrous metals.
  · Tool used: disc grinder.

  • Sconto volumi elevati

  A partire da∗ ：	67.04 €
  Consegna da ：	6 giorni

  *Prezzo unitario in configurazione base

• 

  Disco a tre lati GP【5 Pezzi per confezione】

  TRUSCO NAKAYAMA

  [Features]
  · Allows a wide range of applications from simple grinding operations to advanced grinding and polishing operations. The polishing cloth is folded into a V-shape and bonded to the pad, making polishing work possible in three locations: top, bottom, and side. Cushioning properties are inferior to those of GP multi-discs, but the fit to uneven surfaces is perfect without the risk of sanding in too deep. Can be used right down to the base, making it highly economical.
  · A professional polishing agent, hand planted and crimped one by one.
  [Applications]
  · For polishing metal tanks and various forms of deburring.
  · Ideal for various types of groove polishing.
  · For polishing various types of metal.
  · Tool used: disc grinder.

  • Sconto volumi elevati

  A partire da∗ ：	69.44 €
  Consegna da ：	6 giorni

  *Prezzo unitario in configurazione base

• 

  “GP Top Mini" (tipo senza filettatura)【5 Pezzi per confezione】

  TRUSCO NAKAYAMA

  [Features]
  · All-round type that features an abundant grain size variation to handle rough finishing polishing. Grinding burn, a shortcoming of elastic grindstones, is prevented, and it has high grindability and life 5 to 6 times as long as conventional products.
  [Applications]
  · Ideal for removing spot-welding spatter on automobiles, home appliances etc., and especially polishing molds.
  · For use with ordinary metal.
  · Tools Used: disc grinder and air grinder.

  • Sconto volumi elevati

  A partire da∗ ：	37.52 €
  Consegna da ：	6 giorni

  *Prezzo unitario in configurazione base

• 

  "GP Disc Wheel" (tipo perpendicolare)【5 Pezzi per confezione】

  TRUSCO NAKAYAMA

  [Features]
  · For use with ordinary metal. Gap between polishing cloths is wide, preventing clogging even when rust or paint is peeled off. Since the polishing cloth comes into contact with the material to be polished at right angles, the material will not be damaged.
  · It has heat dissipation property, causing little or no distortion or burning of the material to be polished due to heat.
  [Applications]
  · Pre-plating polishing, metal surface polishing, rust removal, and deburring.
  · Polishing wood and plastic.
  · Tool used: disc grinder.

  • Sconto volumi elevati

  A partire da∗ ：	43.53 €
  Consegna da ：	6 giorni

  *Prezzo unitario in configurazione base

• 

  "GP Disc Wheel Soft" (tipo diagonale)【5 Pezzi per confezione】

  TRUSCO NAKAYAMA

  [Features]
  · Has diagonally attached blades and gently contacts workpieces.
  · It has heat dissipation property, causing little or no distortion and burning of the material to be polished due to heat.
  [Applications]
  · Pre-plating polishing, metal surface polishing, rust removal, and deburring.
  · Polishing woodwork and plastic.
  · Tool used: disc grinder.

  • Sconto volumi elevati

  A partire da∗ ：	41.02 €
  Consegna da ：	6 giorni

  *Prezzo unitario in configurazione base

• 

  "GP Disk Wheel" (tipo attacco a vite diretto / tipo perpendicolare)【5 Pezzi per confezione】

  TRUSCO NAKAYAMA

  [Features]
  · For use with ordinary metal. Gap between polishing cloths is wide, preventing clogging. As the substrate is smaller than the outer diameter of the polishing cloth, the lower surface and sides can be polished at the same time.
  · It has heat dissipation property, causing little or no distortion or burning of the material to be polished due to heat.
  · It can be installed in a single action (screw type).
  [Applications]
  · Pre-plating polishing, metal surface polishing, rust removal, and deburring. Polishing woodwork and plastic.
  · Tool used: disc grinder.

  • Sconto volumi elevati

  A partire da∗ ：	42.00 €
  Consegna da ：	6 giorni

  *Prezzo unitario in configurazione base

• 

  Carta disco【10 Pezzi per confezione】

  TRUSCO NAKAYAMA

  [Features]
  · A disc polishing agent with superior heat-resistance, using a vulcanized fiber circuit board.
  · Uses silicon carbide abrasive grain.
  · Attach to a disc grinder to conduct efficient rust removal, deburring, releasing coating film, grinding of stone materials etc. (Pneumatic/electric dual use)
  · Use at a peripheral speed of 4,300 m/min.
  [Applications]
  · For removing welding beads: #14 - #24.
  · Removal of rust on ship or car bodies: #24 - #60.
  · Metal deburring: #40 - #80.
  · For polishing stone materials (medium finish): #80 - #120.
  · Rough removal of paint: #80 - #120.

  • Sconto volumi elevati

  A partire da∗ ：	18.43 €
  Consegna da ：	6 giorni

  *Prezzo unitario in configurazione base

• 

  Disco a strappo ASTRA, foro, marrone【5 Pezzi per confezione】

  TRUSCO NAKAYAMA

  [Features]
  · Dust suction type Double-Action Sander paper that uses alundum abrasive particles. (some hole diameters may not match.)
  · Velcro tape disc with a hole corresponding to the dust suction type dual action sander. Suction of the dust is conducted through 6 holes.
  · Pattern-coated abrasive cloth is coated with abrasive grain in an even pattern to provide synergistic beating, grinding, and polishing.
  · The pattern coating results in stronger polishing power with less clogging compared to conventional products. Furthermore, the ventilation creates a cooling effect, reducing the likelihood of burns.
  [Applications]
  · For polishing putty and surfacer on metal coatings. (Surface polishing)
  · Fabric and coating polish for woodwork, furniture, musical instruments, etc.
  · Sanding and surface smoothing of baked coatings.
  · Tool used: dust-suction type dual action sander. (Velcro Type)

  • Sconto volumi elevati

  A partire da∗ ：	6.77 €
  Consegna da ：	6 giorni

  *Prezzo unitario in configurazione base

• • In Offerta

  

  Disco a strappo ASTRA, bianco【5 Pezzi per confezione】

  TRUSCO NAKAYAMA

  [Features]
  · Pattern-coated abrasive cloth is coated with abrasive grain in an even pattern to provide synergistic beating, grinding, and polishing.
  · The pattern coating results in stronger polishing power with less clogging compared to conventional products. Furthermore, the ventilation creates a cooling effect, reducing the likelihood of burns.
  · Dust suction type Double-Action Sander paper that uses alundum abrasive particles.
  [Applications]
  · For polishing putty and surfacer on metal coatings.
  · Fabric and coating polish for woodwork, furniture, musical instruments, etc.
  · Sanding and surface smoothing of baked coatings.
  · Tool used: non-dust suction type dual action sander. (Velcro Type)

  • Sconto volumi elevati

  A partire da∗ ：	6.45 €
  	Prezzo speciale
  Consegna da ：	Stesso giorno

  *Prezzo unitario in configurazione base

• 

  Chiusura a strappo Disc φ50【100 Pezzi per confezione】

  TRUSCO NAKAYAMA

  [Features]
  · The count can be exchanged with a single touch.
  · Sharp cutting edge.
  · Abrasion marks are unlikely to appear.
  · Minimal clogging and long life.
  · Granule degree #120-#1000 is water resistant and can be combined with water.
  [Applications]
  · Automotive buffing repair process.
  · Various types of buffing in woodworking and furniture making.
  · Buffing of building paint and in interior construction.
  · Paint buffing in all types of vehicles.
  · Black baked paint buffing.

  • Sconto volumi elevati

  A partire da∗ ：	24.04 €
  Consegna da ：	6 giorni

  *Prezzo unitario in configurazione base

• 

  Nylon Disc【5 Pezzi per confezione】

  TRUSCO NAKAYAMA

  [Features]
  · Uses nylon abrasives made by reinforcing tangled nylon fibers with abrasive dust. Compared to when the workpiece comes into direct contact with the abrasive in paper abrasive cloths, the fibers embedded in nylon abrasive agent act as a cushion, preventing excessive snagging of the workpiece. Mainly used for polishing work. No clogging as it has significant autogenous action.
  [Applications]
  · For removing burn of welding, sanding sealers at curved surfaces in woodworking, finishing before coating, satin finish, and mirror surface pretreatment.
  · Tool used: disc grinder.

  • Sconto volumi elevati

  A partire da∗ ：	63.60 €
  Consegna da ：	6 giorni

  *Prezzo unitario in configurazione base

• 

  "GP Nylon Disc" (tipo attacco a vite diretto)【5 Pezzi per confezione】

  TRUSCO NAKAYAMA

  [Features]
  · It can be installed in a single action (screw type).
  · Uses a nylon abrasive agent in which abrasive is set between intertwined nylon fibers, so compared to when the workpiece comes into direct contact with the abrasive in paper abrasive cloths, the fibers embedded in nylon abrasive agent act as a cushion, preventing excessive snagging of the workpiece. Mainly used for polishing work. No clogging as it has significant autogenous action.
  [Applications]
  · For removing burn of welding, sanding sealers at curved surfaces in woodworking, finishing before coating, satin finish, and mirror surface pretreatment.
  · Tool used: disc grinder.

  • Sconto volumi elevati

  A partire da∗ ：	63.69 €
  Consegna da ：	6 giorni

  *Prezzo unitario in configurazione base

• 

  "New Nylon Disc" (tipo con rotazione ad alta velocità)【5 Pezzi per confezione】

  TRUSCO NAKAYAMA

  [Features]
  · Even without adjusting the rotation speed, there is no burning or clogging. (High Rotation Model)
  · Uses nylon abrasives made by reinforcing tangled nylon fibers with abrasive dust.
  · It prevents over-grinding of non-abrasive materials.
  [Applications]
  · For removing burn of welding, sanding sealers at curved surfaces in woodworking, finishing before coating, satin finish, mirror surface pretreatment, and paint removal.

  • Sconto volumi elevati

  A partire da∗ ：	69.75 €
  Consegna da ：	6 giorni

  *Prezzo unitario in configurazione base

• 

  "New Nylon Disc" (tipo con rotazione ad alta velocità / tipo attacco a vite diretto)【5 Pezzi per confezione】

  TRUSCO NAKAYAMA

  [Features]
  · It can be installed in a single action (screw type).
  · Even without adjusting the rotation speed, there is no burning or clogging. (High Rotation Model)
  · Uses nylon abrasives made by reinforcing tangled nylon fibers with abrasive dust.
  · It prevents over-grinding of non-abrasive materials.
  [Applications]
  · For removing burn of welding, sanding sealers at curved surfaces in woodworking, finishing before coating, satin finish, mirror surface pretreatment, and paint removal.

  • Sconto volumi elevati

  A partire da∗ ：	70.31 €
  Consegna da ：	6 giorni

  *Prezzo unitario in configurazione base

• 

  GP Nylon Mix Disc” (tipo attacco a vite diretto) T0506000000DischiTRC1TRUSCO NAKAYAMA4 / / it.misumi-ec.com / linked / material / fs / TRC1 / PHOTO / t010004855087.jpg\N\N\N\N\N【5 Pezzi per confezione】

  TRUSCO NAKAYAMA

  [Features]
  · Polishing nonwoven fabric and polishing cloth are mixed, in which the fiber plays the role of a cushion to prevent clogging. This also prevents the deep scratches that the paper type may produce and allows only the surface to be finished.
  · Excellent polishing power. It has long life, flexibility and produces a rounded polished surface, making it ideal for finishing curved sections.
  [Applications]
  · Removal of oxidized layers or rust and surface roughening before painting or laminating.
  · Cleaning before welding.
  · For burn removal on stainless steel after welding.
  · From rough to fine finishing for stainless steel, aluminum, etc.
  · For polishing the wooden surface of wooden products, coating polishing or deburring.
  · Tool used: disc grinder.

  • Sconto volumi elevati

  A partire da∗ ：	75.96 €
  Consegna da ：	6 giorni

  *Prezzo unitario in configurazione base

• 

  Soft Power Disc α【5 Pezzi per confezione】

  TRUSCO NAKAYAMA

  [Features]
  · The product is a blue sponge grindstone made of polyvinyl alcohol (PVA) that features superior elasticity and delivers beautiful finished surfaces with moderate elasticity.
  · The GC (green carborundum) and WA (white alundum) abrasive grain is used with resins that have been more carefully selected than conventional products.
  · Stable polished surfaces can be derived with improved durability.
  [Applications]
  · Removal of rust, deburring, welding surface finishing for various metals, grinding and polishing of plated coatings, scale removal, finishing of tanks, etc. (Steel/Stainless Steel/Aluminum/Zinc/Brass/Copper)

  • Sconto volumi elevati

  A partire da∗ ：	120.90 €
  Consegna da ：	6 giorni

  *Prezzo unitario in configurazione base

• 

  "Soft Power Disc" (resina in uretano, per lucidatura semi-finitura)【5 Pezzi per confezione】

  TRUSCO NAKAYAMA

  [Features]
  · Even used as a single action sander, it has the beautiful finish of a double action sander and significantly reduces sheet metal work.
  · The cushion body has special foam material and is evenly in contact with the polishing surface, allowing for feather touch grinding.
  · The constant wearing away and regeneration of abrasive material and special foam material means that it won't get clogged.
  · Granule degree #60 (Finished surfaces #180 to #240 equivalent).
  · For medium polishing of urethane resin.
  [Applications]
  · Scratch removal of general metals, descaling, and finish polishing of stainless steel.
  · Effective for paint removal.

  • Sconto volumi elevati

  A partire da∗ ：	150.13 €
  Consegna da ：	6 giorni

  *Prezzo unitario in configurazione base

• 

  "Poly Disc α" (per lucidatura)【5 Pezzi per confezione】

  TRUSCO NAKAYAMA

  [Features]
  · Blue wool felt disc impregnated with non-chrome type grease and oil abrasive can achieve mirror glossy finish, as is.
  [Applications]
  · Optimal for polishing stainless steel and general metals.
  · Glazing and mirror surface finishing.

  • Sconto volumi elevati

  A partire da∗ ：	98.14 €
  Consegna da ：	6 giorni

  *Prezzo unitario in configurazione base

• 

  "Poly Disc" (per lucidatura)【5 Pezzi per confezione】

  TRUSCO NAKAYAMA

  [Features]
  · Wool felt disc impregnated with non-chrome type grease and oil abrasive can achieve mirror glossy finish, as is.
  · Eliminates the need for adding polishing agent.
  · Soft high-quality product with additional cushion function.
  [Applications]
  · Optimal for polishing stainless steel and general metals.
  · Glazing and mirror surface finishing.

  • Sconto volumi elevati

  A partire da∗ ：	186.71 €
  Consegna da ：	9 giorni

  *Prezzo unitario in configurazione base

• 

  "Sisal Disc" (per finitura media)【5 Pezzi per confezione】

  TRUSCO NAKAYAMA

  [Features]
  · Enables beautiful polishing with a sharp cut.
  · Used for intermediate polishing for steel, stainless steel, aluminum, etc. with oil and fat abrasive (white rod).
  · Sisal (hemp) and cotton are combined.
  [Applications]
  · Steel, stainless steel, aluminum, and other medium polishing and sub polishing.
  · Tools Used: disc grinder and air grinder.

  • Sconto volumi elevati

  A partire da∗ ：	80.23 €
  Consegna da ：	6 giorni

  *Prezzo unitario in configurazione base

• 

  Welding Bead Removing Disk【5 Pezzi per confezione】

  TRUSCO NAKAYAMA

  Ceramic disc that emphasizes grinding power. It has more grinding power than the offset and flexible grindstones, improving work efficiency. Sharp surface finishing is possible. For removing welding beads, deburring, chamfering, removing rust, removing paint, and polishing stainless steel and general steel.

  • Sconto volumi elevati

  A partire da∗ ：	31.25 €
  Consegna da ：	6 giorni

  *Prezzo unitario in configurazione base

• 

  Disc Paper GP Top® 100 fogli【100 Pezzi per confezione】

  TRUSCO NAKAYAMA

  [Features]
  · All-round type that features an abundant grain size variation to handle rough finishing polishing.
  · There is hardly any strain on the workpieces due to heat or burning due to the air cooling effect.
  [Applications]
  · Metal polishing, removing welding beads, polishing automobiles, hulls and tanks, various types of deburring, and polishing other stainless steel, steel, and nonferrous metals.

  • Sconto volumi elevati

  A partire da∗ ：	410.15 €
  Consegna da ：	6 giorni

  *Prezzo unitario in configurazione base

• 

  Disco conico in feltro【5 Pezzi per confezione】

  TRUSCO NAKAYAMA

  [Features]
  · Thanks to its umbrella-like shape, the tip of the disc remains in constant contact with the workpiece, making a beautiful finish possible.
  · Has high flexibility and adapts well to workpieces.
  · Mounting hole diameter is 15 mm, usable with both electric and pneumatic grinders.
  [Applications]
  · Grease abrasive (blue bar etc.) is applied to iron and stainless steel for polishing and mirror finish.
  · Tool used: 100 mm disc grinder (electric/pneumatic dual use)

  • Sconto volumi elevati

  A partire da∗ ：	119.44 €
  Consegna da ：	6 giorni

  *Prezzo unitario in configurazione base

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