Klein 1/4 In. Magnetic Tip Nut Driver with 6 In. Hollow Shaft Breadcrumb Home / Products / Parts / Tools and Instruments / Hand Tools / Nut Drivers Loading... Customer Part Number: KLE-646-1/4M Brand: Klein Hex Size (In.): 1/4 Shank Length (In.): 6 Tool Length (In.): 9-3/4