Replacement bit for Klein Tools Heavy-Duty and Ratcheting Multi-Bit Screwdriver / Nut Drivers. Impact-rated ProFlex bits, #20 TORX® and #25 TORX® tips are precision machined for exact fit into fastener. The heat-treated bits are industrial strengths for the ultimate in durability and performance. Specifications Application: Fastening For Use With: Cat. Nos. 32313HD, 32315HD, 32305HD Special Features: Replacement Bit, Impact-Rated TORX® Bits: #20, #25 Material: Steel Finish: Black Phosphate Overall Length (Inch): 2.75 Overall Length (cm): 7 Magnetic: No Overall Height (Inch): 0.25