Hex Drive Bit Holder, Magnetic, 1 4 in Drive, 3 in Length no checkout compact design fits well under compact design fits well under welding helmets and with safety glasses Mask drops down for convenient storage around the neck or locks down for custom fit Adjustable head cradle and curved neck buckles for extra comfort or lose rebound qualities with repeated use Features quality rubber that remains non brittle in temperatures as low as 40° F leading to better torque transfer Proprietary steel and heat treat process yields greater strength and longer bit life Cutting edge machining process results in tighter tolerances and superior product consistency Provide a better and more consistent fit to fasteners