Bosch HC5091 1-1/2-In. x 21-In. SDS-max Speed-X Carbide Rotary Hammer Bit for Concrete Drilling One-Day Sale: Up to 60% Off Bosch HC5091 1-1/2-In. x 21-In. SDS-max Speed-X Carbide Rotary Hammer Bit for Concrete Drilling Simple review So you can …