Chuck Size Range: The drill chuck adapter size can be adjusted within the range of 2-13mm, suitable for 2-13mm drills. High-grade materials Quality: A sturdy keyless chuck made of HSS and ABS, which is very durable, wear-resistant and impact-resistant. Easy to use: just plug in and manually tighten your standard drill bit to use , convenient to use with standard drill on SDS, with excellent smooth and smooth movement Removable: the drill adapter is detachable and can be replaced when needed, so you don't need to order more forests. Ideal for SDS, GSB and GSR, electric hand drills, hammer drills and more conventional electric drills Strong grip: The SDS chuck uses a unique torque thrust bearing and is exquisitely designed. Just tighten the chuck to get a good grip and stable clamping.