3-jaw chuck-a drill chuck with a universal key 3-jaw design can firmly fix various tool holders, range3 adapters-3 different types of adapters can easily convert your tool into a drill bit, suitable for a variety of connection needs 1 or 4inch hex adapter for screwdrivers, 1 or 2inch square socket adapter for impact wrenches, The s adapter is used for hammer drill or electric hammer.Convenience-Compared with the keyed chuck, the keyless chuck can fix the bit without other tools, avoiding the trouble of holding and finding the key of the small chuckDurability-The chuck is a high-precision thread with a hard rust-proof plastic body and a tight taper. Jaws and springs are made of high-quality steel alloy. All extensions are treated with anti-rust surface to extend the service life.Wide compatibility-This drill chuck adapter tool kit is suitable for gyro screwdrivers, cordless screwdrivers, impact screwdrivers, impact wrenches, hammer drills and certain angle grinders of most on the market.specificationName: Electric drill chuckcolour: blackMaterial: plastic and ironsize: 6x1.27cmPackage Contents: 1 x automatic chuck1 x electric conversion head1 x hex post1 x round shank postOnly 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.