*It is suitable for pneumatic screwdriver and ordinary hand electric drill. It is mainly used for installing and disassembling hexagonal head screw and hexagonal head nut.
*It is made of high quality chrome vanadium steel, hardened by high temperature heat treatment, hardness above HRC60, not easy to be deformed and worn, and .
*With a strong core, it can absorb screws for easy removal and installation of hex head screws and nuts.
*The hex shank design increases the clamping force and is widely used.