Drill: Drill driver has a standard 1/4inch is excellent fit to power tools and is constructed of metal for durability that connects to your driver. Easy On-And-Off: Socket adapter has a 3-jaw securely holds round shank drill bit and includes 1/2 inch adapter to quickly go from driving to drilling. Fits Wide-Ranges Of Bit: Hand drill adapter is the capacity and clamping-range for all drill bit size from 1/16inch to 3/8inch drill bit to get drilling with driver. Transforms Driver: This drill is easyways to adapt or convert driver,power tools,and wrenches do work of regular power drill without any grinding needed. Drill Extension: This for your drill extends the reach of your drill or driver.Gives you the freedoms of one-handed drilling with both left and right hand rotations.