XUEMEI [Strong MagnetismHigh Occlusal Ability] With strong magnetic ability, it's easy to attract screws strongly without dropping. Helpful for less abrasions of screws during work. [Universal 1/4' Hex Shank] With 1/4'(6.35mm) hex shank, these hex shank bit sockets are suitable for corded or cordless power drills, Torque drill, pneumatic screwdriver, electric screwdriver, manual screwdrivers. [Multiple Purposes] Wide application for installation and removal of Hex screws, hex nuts, hex bolts, hex self-tapping screws, etc. [Superb Material] Made of strong carbon steel and chrome vanadium steel, these hex bit sockets have high hardness. With overall high temperature quenching heat treatment and large torque, these nut driver bits have a long service life. [Package List] 10pcs hex socket bits with length in 60mm. Specification color as show Material: carbon steel and chrome vanadium steel Size: length in 60mm, 1/4(6.35mm) hex shank Inner diameter of socket: 6.35mm(1/4) Tips Air impact wrench is NOT recommended. Please do a blank run before starting the machine to check if it works well. Please wear safety equipment during working. Package List 10 x hex sockets for drill