Chuck Screw For Use With Grainger Item Number 11A170 11A172 21RV40 21RV41 21RV42 24T853 32ZU52 6CXN2 For Use With Mfr Model Number DCD780C2 TYPE 2 DCD780C2 TYPE 4 DCD780C2 TYPE 1 DCD780C2 TYPE 3 DCD785C2 TYPE 1 DCD785C2 TYPE 3 DCD785C2 TYPE 4 DCD785C2 TYPE 2 DCD790D2 TYPE 1 DCD790B TYPE 1 DCD795D2 TYPE 1 DCD780B TYPE 4 DCD780B TYPE 2 DCD780B TYPE 3 DCD780B TYPE 1 DCD771C2 TYPE 1 DCD710S2 TYPE 2 DCD710S2 TYPE 3 Fits Brand Dewalt