Bit holder and nut setter options from Grainger can set screws and nuts in a snap. Bit holder and nut setter varieties are designed with universal, quarter-inch hex shanks to fit most power tools. A bit holder is used with a hex insert bit, and a magnetic nut driver can provide a reliable grip on metal screws and other hex head fasteners. A hex driver screw guide features a retracting sleeve to help steady long fasteners and can work great for hard-to-reach applications.