About this item Extra long adaptors 1/2" (73mm) 3/8" (65mm) 1/4" (65mm) Made with chromium-vanadium steel forging, providing high strength and excellent wear resistance for long-lasting use. Features a black phosphate finish that not only prevents rust and corrosion but also absorbs and retains oil, keeping moisture at bay. Equipped with a spring ball lock mechanism to ensure a secure fit with the driver head, preventing slipping during operation. Can be securely installed in handheld drivers, drill drivers, or impact wrenches for versatile use. Chamfered ends enable smooth insertion into fastener heads, reducing wear and tear on both the tool and fasteners. Suitable for a wide range of applications, including DIY hand-making, household maintenance, and general repairs. Specification: Drive: 1/4-inch, 3/8-inch, 1/2-inch Hex Shank: 1/4-inch Total Length: 65mm / 2.5-inch, 72mm / 3-inch Material: Chrome Vanadium Steel Further details: Set Includes: 3 x 1/4" hex shank extensions in 1/4", 3/8", and 1/2" drive sizes. CR-V Steel: Made from heat-treated chrome vanadium steel with a black phosphate finish for corrosion resistance and added strength. Secure/Firm: Equipped with a spring-loaded ball to retain sockets and prevent them from dropping. The through-holes of the drive end of the adapter and the reducer are locked on the drive tang. Usage: Attach the extension bars to any powered/cordless drill chuck or impact driver to convert it into a high-speed nut driver. Chamfered Design: Chamfered ends smoothly insert into fastener heads, reducing wear.
