The 1.27 cm female socket adapter can easily convert a impact wrench into a drill bit; a tool-free accessory allows you to lock and release quickly and easily. Torque thrust bearing, unique easy-to-grip performance translates into greater clamping force. Convert a cordless electric screwdriver into a drill or grinder in a few seconds. The perfect accessory for all your drilling operations Universal SDS Plus chuck for cordless electric screwdrivers. Thread installation, the chuck is suitable for installation on any 3/8-24UNF thread adapter. Screws are used to tighten the adapter and chuck. Keyless design, no need to tighten the chuck. Can be tightened with one hand. Make hand work more convenient. To install the drill bit, simply the collar from the front of the tool, twist it to to any SDS plus impact driver, and then loosen the collar. specification: Handle type: SDS-Plus Design: Classic 3-claw keyless design colour: black + gray Material: Metal size: 0.8-10mm Package Contents: 1 * 10mm automatic chuck 1 * 10mm electric conversion head 1 * 10mm hexagonal post 1 * 10mm round handle post Note: This product cannot be used counterclockwise! Not suitable for impact drives or applications involving high torque loads. Only 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.