Chuck Keyless with OEM number N454251 is a genuine DeWalt part for DeWalt Models including :
DEWALT DCD991 CORDLESS DRILL 18V LI-ION (TYPE 1)
DEWALT DCD991 CORDLESS DRILL 18V LI-ION (TYPE 10)
DEWALT DCD996 CORDLESS DRILL 18V LI-ION (TYPE 1)
DEWALT DCD996 CORDLESS DRILL 18V LI-ION (TYPE 10)
DEWALT DCD992 CORDLESS DRILL 18V LI-ION (TYPE 1)
DEWALT DCD997 CORDLESS DRILL 18V LI-ION (TYPE 1)
DeWalt DCD997N 18 Volt XR Cordless Brushless Combi Drill - Type 1
DeWalt DCD992N-XJ Cordless Drill [Type 1]
DeWalt DCD991NT Cordless Drill TYPE 2
DeWalt DCD991P2 3 Speed Drill / Driver TYPE 2
DeWalt DCD992 Cordless Drill TYPE 2
DeWalt DCD996 Cordless Drill TYPE 2