DEWALT's 7/8 in. x 8 in. x 13-1/2 in. SDS-MAX High-Impact Carbide 4-Cutter Rotary Hammer Drill Bit uses a high-impact carbide design engineered for durability under repeated hammering. The four cutting edges help produce a more uniform hole while supporting effective material removal, and the flute geometry helps clear drilling debris from the hole as work progresses. Designed for professional tradesmen as well as experienced DIY users, this SDS MAX drill bit is a practical choice for concrete drilling, masonry work, anchor installation, and general construction applications requiring a heavy-duty rotary hammer accessory.