Dewalt SDS Max Rotary Hammer Drill Bit, Drill Bit Size 1-3/8 in, Overall Length 22-1/2 in, Max Drilling Depth 18 in, Carbide Tipped

These drill bits have a carbide tip with multiple cutters for creating holes in concrete and masonry. They also have variable-helix flutes that efficiently remove dust from the hole to minimize heat during drilling. The bits' SDS-Max shank prevents them from slipping in high-torque drilling applications. The bits install into rotary hammer drills with SDS-Max chucks, and they can be changed in the chucks with one hand. SDS-Max chucks have spring-loaded balls that fit into the grooves on the bits' shanks to hold the bits in place in the chucks.