Made with chromium-vanadium steel forging, high strength and good wear resistance, durable to use.To prevent rust and corrosion, the black phosphate finish absorbs and retains oil, repelling moisture.The spring ball lock ensures a tight fit with the driver head to prevent slipping during use.Can be firmly installed in a handheld driver, drill driver or impact wrench.Chamfered ends insert smoothly into fastener head, reducing wear.Wide application in DIY hand-making, household maintenance, and most general repairs.Specification:Drive: 1/4-inch, 3/8-inch, 1/2-inchHex Shank: 1/4-inch1/4" Drive Length: 25mm / 1-inch, 30mm / 1.18-inch, 50mm / 2-inch, 65mm / 2.5-inch3/8" Drive Length: 50mm / 2-inch, 65mm / 2.
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