Klein Keystone-Tip Screwdriver with Heavy-Duty Square Shank and Cushion Grip Breadcrumb Home / Products / Parts / Tools and Instruments / Hand Tools / Screwdrivers Loading... Customer Part Number: KLE-600-4 Brand: Klein Shank Length (In.): 4 Shank Tip: 1/4 In. Width Tool Length (In.): 8-11/32