If you are one that drills into concrete on the reg, we've got the hammer drill bit just for you. The Bosch Bulldog Xtreme 1/2 IN. X 10 IN. X 12 IN. SDS-Plus Carbide Rotary Hammer Drill Bit is the perfect bit for drilling through concrete and concrete with rebar. Honestly, if you are drilling all time like it's your full time job, this is totally for you.