Genuine DeWalt release button N190511 — a direct replacement release/moulded button for the chuck/bit-release assembly on compatible DeWalt rotary hammers. It’s a compact, molded black plastic push-release designed to snap into the tool’s latch housing and restore positive, reliable bit changes without having to replace larger assemblies. This part is used on a number of DeWalt rotary-hammer models (examples: DCH253B, DCH253M2, DCH273B, DCH273P2, DCH273P2DH, DCH363KL) and is listed as the correct DeWalt part for those tools.

Compatible model examples: DCH253 (DCH253B / DCH253M2), DCH273 (DCH273B / DCH273P2 / DCH273P2DH), DCH363 (DCH363KL) — confirm your exact model type prior to install.