... :s2 3.Surface:sandblasted 4.Model Nomber:SBF-151-163 star driver,bit driver,security bit1.Material types:Cr-V 6150,8660,S22 ... .Head types:PH, PZ, slot, Torx, square, hex, hex-plus, Z-spanner, Torx hollow, Torx plus, tri-wing4.length:505.Special ... heat-treated6.property stabilize and lifetime longThe driver bit be listed here are the part we have now ...