General description This adapter set is designed to provide a locked extension to your existing tool, allowing you to reach a multitude of hard-to-reach spaces. The heavy-duty spring-loaded ball bearing ensures a tight fit in the driver head to prevent slipping during use. This set includes three adapters: 1/4", 3/8", and 1/2", each with a 1/4" hex key/driver bits for all quick-change drill chuck systems, effectively turning any power drill into a power nut driver. Technical specifications Material: Hardened chrome-vanadium steel Adapter sizes: 1/4", 3/8", 1/2" Usage Fits comfortably and securely in your drill chuck or handheld driver Great for DIY, automotive repairs, household maintenance, and general repairs Color-coded rings for easy identification Other information