Installation kit to drill and drive Tapcon screws with only a SDS-Plus rotary hammer. Contains everything needed to install common flat head and hex head concrete screws. Bits feature 2-cutter geometry for fast drilling and debris removal.Reinforced flute design increases impact resistance and transfers energy directly to the bit tip. Rebar chamfers withstand impact from rebar and hard aggregate, and reduce carbide chipping. Centering tip improves accuracy. Kit includes 1/4" hex drive bit, 3/16" x 7" with 1/4" hex rotary hammer drill bit, 5/16" hex drive bit, 5/32" x 7" with 1/4" hex rotary hammer drill bit, drive sleeve, #2 Phillips driver bit, #3 Phillips driver bit.