DRIVER TO DRILL: This unique converter will turn any 1/4inch cordless power screwdriver into a drill or grinder for all your drill up to 3.8 mm (0.15 inches) in diameter. This tool gives you the freedom of one-handed drilling with both left- and right-hand rotation. QUICK INSTALL: This drill chuck for impact driver goes from driving to drilling in seconds to keep up with the of your job by a simple plug and play action. impact drill adapter accepts drill up to 1/4inch diameter making this the perfect tool for any home or garage setting. KEYLESS DRILL CHUCK: The keyless chuck securely holds round- drill without the need for or extra tools to install the drill bit onto your cordless screwdriver giving you a quick and easy transformation to a cordless power drill. 1/4INCH FIT HEX KEY ADAPTER: The 1/4inch hex impact wrench adapter easily inserts into your standard impact driver with ease letting you switch from task to task instantly. This chuck can convert an impact driver into a driver drill quickly and efficiently. NOTE: If you plan to drill through hard metal such as steel and if especially thick, then please use a wrench or a plier to tighten the drill bit into place for and drilling. color:Black Material:Metal Package Contents: 5 x Keyless Drill Chuck Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.