Package Contains 3Pcs - 1/4"" drive adapter, 3/8"" drive adapter, and 1/2"" drive adapter and each with a 1/4 inch hex shank driver socket wrench adapter set. Different colors can distinct Different touch.Turns any power drill into a power nut driver Sturdy spring-loaded ball bearing holds sockets securely in place Sockets Snap-On Tightly and Won't Slip Off.Multi-FunctionThis adapter set is designed to provide a securely locked in extension to your existing tool. Provides additional length to reach into a multitude of hard to reach spaces. The spring ball lock ensures a tight fit into the driver head to prevent slipping during use. Specifically machined to fit securely into a hand held driver, drill driver or impact wrench.Durability Quality is a guarantee with this 3 piece sturdy and durable solid steel set designed to withstand torque compression under most standard use situations. The exterior anti-weathering coating provides extra protection from damage against elements and substances such as oil and fluids that may come in contact with the extension bars during use with repairs such as in the automotive field.MaterialChrome Vanadium Steel for home use - Specification: Sockets Standard 1/4"" hex shank to 1/4"" 3/8"" 1/2"" socket & 1/4 "" shank can be converted to 1/4"" 3/8"" 1/2"" square head. Easy to Choose: Different colour coded rings, make it easy to pick the right one.General UsageFits snugly and securely in your drill chuck or hand held driver. Consisting of your most common bit sizes 1/4"", 3/8"", and 1/3"" changing shank sizes. Provides versatility and convenience no matter which tool you chose to use. Great for the DIY, household maintenance, and most general repairs, not for industrial work. A great tool addition to any tool box set.