【Purpose】: This adapter set is designed to provide a locked extension to your existing tool. Provides extra length to reach a multitude of hard-to-reach spaces. The spring-loaded ball lock ensures a tight fit in the driver head to prevent slipping during use. Specifically machined to securely fit a handheld screwdriver, drill driver, or impact wrench. 【PACKAGE CONTAINS】: 3Pcs: 1/4", 3/8", 1/2" each with a 1/4" hex key / driver bits for all quick-change drill chuck systems.Turns any power drill into a power nut driver. The heavy-duty spring-loaded ball bearing holds the sockets securely in place. Sockets snap into place firmly and will not slip. 【Colorful】: Easy to choose: Different color-coded rings, clear help quickly choose the right one. 【Material】: Made from hardened chrome-vanadium steel to ensure long life. The construction of must be compatible with the most powerful impact guns. 【Usage】: Fits comfortably and securely in your drill chuck or handheld driver. Consisting of your