Dewalt SDS Plus Rotary Hammer Drill Bit, 5/16 in Drill Bit Size, 6-1/2 in Overall Length, 4 in Max Drilling Depth, Carbide Tipped

The entire cutting head on these drill bits is made from solid carbide, which allows the bits to last longer than standard SDS-Max concrete and masonry drill bits. The bits' SDS-Plus shank prevents them from slipping in high-torque drilling applications when creating holes in concrete and masonry. The bits install into rotary hammer drills with SDS-Plus chucks, and they can be changed in the chucks with one hand. SDS-Plus chucks have spring-loaded balls that fit into the grooves on the bits' shanks to hold the bits in place in the chucks.