[Purpose]: This adapter kit is designed to provide a tightly sealed connection to your existing tool. Provides extra length to reach many hard to reach spaces. Spring ball lock ensures a secure fit to the driver head to prevent slippage during use. Specially manufactured to fit securely in a hand held driver, drill driver or impact wrench. [MULTIFUNCTIONAL]: This hex adapter set is designed to provide a tightly sealed connection to your existing tool. Provides extra length to reach a large number of hard to reach spaces. Attach these extension rods to any electric or cordless nail drill or impact driver to turn them into a high-speed nut driver. [USAGE]: This 3-piece driver bit hex shank extension bar set is designed to meet a variety of needs. Fits comfortably and securely in a drill bit or hand-held driver. Consists of the most common bit sizes 1/4", 3/8", 3/8", and 1/4" with variable shank sizes. Provides versatility and convenience no matter which tool you choose to use. Great for car repairs, home maintenance and most general repairs. A great tool addition to any tool box collection. [Use] 105 degree extension, can be used when you have hard places to reach 360 degree adjustable thumb ledge. It can connect hand drill and manual wrench. The function head is equipped with a locking and magnetic device, to ensure that the cover does not fall off. Built-in strong magnet for good holding power, accepts all standard 1/4" hex shank heads. Mounts on both the electric drill and socket wrench, allowing access to inaccessible or tight spaces. Great for narrow quarters, they are difficult to teach. It can be connected to a drill, rechargeable drill or impact wrench. Easy, lightweight, quick and connects with a standard hex screwdriver. Perfect hand tool for hard to reach areas. Connect the hand drill and hand screwdriver. Durable die-cast construction with 3 sets of ball bearings for long-lasting durability. Built-in strong magnet for good durability, accepts all standard 1/4" hex bits.