Original DeWalt part 1004691-27 — a small molded cap/cover designed to replace the damaged protective cap on compatible rotary-hammer drills; it’s listed in  parts diagrams as part number 1004691-27.

This replacement cap is the exact-fit cover shown in exploded parts lists for a range of SDS-plus rotary hammers (examples: Stanley FME1250 / KFFMED1250 Type 1 and Black & Decker KD1250K), so it’s suitable when the original housing cap is cracked, missing, or worn.

Easy to install — the molded cap snaps into the housing to restore the tool’s external protection and alignment of the front-end components; a straightforward repair part to keep on hand with other power tool parts for emergency fixes.

If you need the genuine DeWalt-numbered 1004691-27 cap, this is the matching replacement shown in parts lists used across DeWalt / Stanley and  Black & Decker.