1.Drill Chuck for Makita 766027-7 1/2-20UNF Mount 1.5-13mm Clamping Capacity 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 Makita Keyless Drill Chuck 766027-7 DHP484 DDF484 DDF482 BHP452 BDF453 BDF452 LXFD01 LXPH05Z XFD01RW DHP485 DDF446