The Milwaukee® SDS Plus bits with 1/4 in hex are designed specifically for tapcon screw applications. Built to take on brick, block and concrete Milwaukee® SDS bits feature two-cutter geometry for fast drilling and debris removal. The patented, reinforced flute design increases impact-resistance and transfers energy directly to the bit tip. Patented rebar chamfers withstand impact from rebar and hard aggregate and reduce carbide chipping. To be used with drive sleeve available in the SDS Plus Tapcon installation kit (48-20-7497).