Classy tool, good for screwdriving, the hex adapters fulfill their function and are very robustly constructed so that the bits keep secure. The 1/4" hex fits all quick-change chucks as well as the standard collet chuck adapter, drill nut, extension bar driver, 3P series set 1/4" 3/8" 1/2" This set is perfect for your hammer drill or drill and allows you to replace your ratchet with a power tool Aluminum alloy material suitable for high-performance impact wrench, the spring-loaded ball bearing on the head keeps the pedestal secure. Suitable for home DIY, carpenters, auto sharing, specializing in machine repair and so on most used immediately. Change your hand in a set of driven sockets.