Keyless Drill Chuck with 1/16"-1/2" mount,Easy clamping and locking with one hand operation it will send a Left Hand CHUCK SCREW Keyless and quick action, radial locking It is fit to MAKITA BHP458 DDF481 DHP481 DHP448 DHP458 DDF448 DDF458 BDF448 DDF486 XPH14Z It relpace for DCD920 DCD925 DCD990 DCD995 DCD945 DCD930 DCD931 DCD980 DCD985 DCD932 DCD935 DCD936 DCD940 DCD937 it is replace for keyless chuck Metal, Radial Lock it Replace for 763248-2 1/2" HD Chuck 1/2"x 20 XPH03Z/Mdirll this chuck replacement is twice as nice as the original drill chuck that my Makita came with,,,this one is all metal and came with a new screw for mounting.suitable for many similar 1/2 inch chucks it is fit to DEWALT CD985 DCD990 DCD995 DW980 DW981 DW984 DW987 DW988 cordless drill screw driver