[Nominal M] 2.5, 3, 3.5, 4, 5, 6
[Material] Steel · SUS410 · Stainless Steel
[Surface Processing] None / Non-Chrome (Galvanized) Chromate Color / Non-Chrome (Galvanized) Black / Non-Chrome Black / Trivalent Black / Trivalent White / Unichrome Plating / Chromate Plating / Nickel Plating / Black Nickel / Chrome Plating / Trivalent Stainless Coat / Tin Cobalt / Black Painted / Other Special Treatment (ZEC Coat - Base Trivalent White)