1.Drill Chuck for Milwaukee 1/2-20UNF Mount 1.5-13mm Clamping Capacity， FOR Milwaukee Keyless Drill Chuck 2. FOR Milwaukee Keyless Drill Chuck Quickly Loosen Or Tighten The Chuck By Hand For Easy Bit Changes Without Fumbling For A Chuck Key. 3.The 1/2-20UNF Connection Size Fits Most Popular Brands Of Electric Drills Like Dewalt, Milwaukee, Craftsman, Ridgid, Makita And More For Maximum Compatibility.