Magnetic screwdriver bit holder

Magnetic srewdriver bit holderProduct Description1, Stainless steel driver guarrantee the best usage durability and max. torque for job demands.2, 1pc structure is composed of 1 whole piece of stainless steel blank processed.3, 2pc structure is composed of stainless steel tube driver part and Cr-V steel hardened hex shank(black part in picture).4, Best rotary concentricity is done for professional usage demands.5, 1pc structure one has C type of steel ring in the part of