$53.99 Milwaukee 1/2 in. x 4 in. x 6 in. Hammer Drill Bit-48-20-8830 - The Home Depot
Carbide Tipped Masonry Drill Bit 1/2'' - 53178 | Klein Tools - For Professionals since 1857
2-1/2 Inch Diamond Wet Core Drill Bit For Concrete, Brick, Masonry,and Block With 1-1/4-7 
