... :Sandblast 4.passed ISO9001 and GSG 5.high durability s2 screwdriver bit,bits ph2,driver,tool1. Material: S2, Cr-V 6150 ... plating, or any other special finishes be required by customers4.Type:single head5.Head types:PHillips, , slotted, Torx, Torx hollow, ... heat-treated7.length:50MM8.Stainless steel power bitslength(mm)head type Model Number50phillips SBF-04150Pozi SBF-04250 slotted SBF-04350 Torx ...