Impact rating, corrosion resistancefor industrial or mechanical , loaded brake ball ensures secure socketConvert any /cordless drill to an electric nut driveConvert a drill to a fast socket driver suitable for increasing torque projectsHelps prevent socket breakage or peelingTake advantage of the drill with this impact-level socket adapter kit. a drill in a high torque project without disconnecting or stripping the socket.1/4 inch Hex to: 1/4 inch drive 3/8 inch drive 1/2 inch drivecolour: blackMaterial: Chromium vanadium steelPackage Contents: 3 * socket adaptersOnly the above package content, other products are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.