$52.99 Bosch 1-1/2 in. x 24 in. x 29 in. SDS-max Speed-X Carbide Rotary Hammer Drill Bit for Concrete 
Hilti TE-CX 1/2 in. x 18 in. SDS-Plus Style Hammer Drill Bit-435014 - The Home Depot
ITW BRANDS 11248 3/16x4-1/2-Inch Concrete Drill Bit 92097112483 | eBay
