DEWALT's 5/8 in. x 16 in. x 21 in. SDS-MAX High-Impact 4-Cutter Carbide Drill Rotary Hammer Bit also incorporates a wear mark indicator to help identify when the bit has reached the point where accurate anchor-hole diameter may no longer be maintained. Its four-flute design helps move drilling debris away from the hole, supporting productive drilling during demanding jobs. The carbide construction and rebar-strike-resistant head make it a practical choice for professional tradesmen as well as DIYers handling structural concrete, block, brick, and similar masonry applications. With a 21 in. overall length and SDS-MAX compatibility, it is designed for substantial drilling reach without sacrificing the robust construction expected from a heavy-duty rotary hammer accessory.