This pin assortment has 450 pieces and 18 sizes, is made of steel, and has a bright (uncoated) finish. Plus, it includes 25 1/16x1, 25 1/16x½, 25 1/16x¼, 25 1/16x¾, 25⅛x1, 25⅛x1½, 25⅛x1¼, 25⅛x½, 25⅛x¾, 25 3/32x1, 25 3/32x1¼, 25 3/32x½, 25 3/32x¼, 25 3/32x¾, 25 5/64x1, 25 5/64x½, 25 5/64x¼, 25 5/64x¾. It meets the standards for ANSI, DIN, Military Specifications and ANSI.