Shop now for a bargain on the Klein Tools 630-1/4"sulated Nut Driver 1/4" Hex Drive, 6-3/4" Overall Length, Steel, Chrome Plated on PlumbersStock.com - the best in hardware. Klein Tools 630-1/4"sulated Nut Driver 1/4" Hex Drive, 6-3/4" Overall Length, Steel, Chrome Plated