1/4" QUICK-CHANGE HEX SHANK 1/4" NUT SETTER DRIVER DRILL BIT, 150MM LENGTH Universal 1/4 inch hex shanks fit a variety of quick-change chucks and drill, driver, or screwgun. Magnetic nut setter can be be used with an impact/bit driver or hex socket ratchet to securely grab nuts and fasteners for easy installation or loosening/removal. Widely used in household DIY, woodworking, professional machine repairing, etc.