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-600-6 Brand: Klein Shank Length (In.): 6 Shank Tip: 5/16 In. Width Tool Length (In.): 10-15/16