Specifications: Features: Head:Hex head,Hex flange head,Pan head,Pan framing head,Flat head,Truss head,Wafer head,Oval head,Flower head Thread And Point Type: Type A,Type B,Type AB,Type 1,Type 23,Type 25,Type Hi-low,Type F Recess: Philips,Pozi,Slot,Torx,Hex undercut,Square Meterial: Stainless steel;Steel C1022,C1018 Diameter: #4-#14 Zinc plated 3 - 5 my or 5 - 8 my. Length: 3/8" - 5" mm Hardened.