Class 3-Jaw Design: Allows you to effortlessly hold round- drill bits from 0.8mm to 10mm (0.03-0.39 inch) securely. Keyless Design: Tool-free accessory allows you to quickly and easily lock and release. Quick Change Universal Fit: For use with impact driver, snaps easily into the power screwdriver. Perfect Drill Conversion Tool: Converts a cordless power screwdriver into a drill or grinder in seconds. It can NOT be used counterclockwise and NOT suitable for impact drivers or applications involving high torque load. Colour: black Material: metal Package Contents: 1 * Chuck 1 * 1/4Inch Hex Chuck Adapter 1 * Round handle Adapter 1 * Electric Conversion Head Only the above package content, other products are not included. Note: Light reflection 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.