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. Extensions: Can be firmly installed in a handheld driver, drill driver or impact wrench. Adapter and reducer: Chamfered ends insert smoothly into fastener head, reducing wear. Wide application in DIY hand-making, household maintenance, and most general repairs. Specification: Extension sizes: 1/4-inch, 3/8-inch, 1/2-inch drive and 1/4-inch hex shank 1/4" Drive Extension Length: 25mm / 1-inch, 30mm / 1.18-inch, 50mm / 2-inch, 65mm / 2.5-inch 3/8" Drive Extension Length: 50mm / 2-inch, 65mm / 2.5-inch 1/2" Drive Extension Length: 50mm / 2-inch, 72mm / 3-inch Reducer sizes: 3/8-inch drive (F) to 1/4-inch drive (M) and 1/2-inch drive (F) to 3/8-inch drive (M) Adapter sizes: 1/4-inch drive (F) to 3/8-inch drive (M) and 3/8-inch drive (F) to 1/2-inch drive (M) Adapter and reducer length: 25mm / 1-inch, 37mm / 1.5-inch Material: Chrome Vanadium Steel Finish: Black Phosphate Package Content: 8pcs x Extension Bar 2pcs x Socket Adapter 2pcs x Socket Reducer
