Impact rating, corrosion resistance for industrial or mechanical use, Spring loaded brake ball ensures secure socket Convert any power/cordless drill to an electric nut drive Convert a drill to a fast socket driver Most suitable for increasing torque projects Helps prevent socket breakage or peeling Take advantage of the drill with this impact-level socket adapter kit. Use a drill in a high torque project without disconnecting or stripping the socket. 1/4 inch Hex Shank to: 1/4 inch square drive 3/8 inch square drive 1/2 inch square drive colour: black Material: Chromium vanadium steel Package Contents: 3 * socket adapters Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.