Chuck size range: The size of the drill chuck adapter can be adjusted in the range of 2-13mm, suitable for 2-13mm drill bits. HIGH MATERIAL QUALITY: Solid keyless chuck made of HSS and ABS, very durable, abrasion and impact resistant. Easy to use: Simply plug in and hand tighten your standard drill bit to use, easy to use with standard drill bits on SDS, with excellent smooth movement. Removable: The drill adapter is removable and can be replaced as needed, so you don't need to order more drills. Works with SDS, GSB and GSR, hand drills, impact drills and more traditional drills Strong Grip: SDS collets feature single torque thrust bearings and are beautifully designed. Just tighten the collet for good grip and stable clamping force. Packing: 1pcs keyless chuck. Sold by store