$67.99 1/2 Masonry Bit 1/2 CARBIDE Tip Masonry Bit 6 Pack Lifetime Warranty Drill Hog® | eBay
Bosch 1/2 in. x 4 in. x 6 in. Carbide Fast Spiral Masonry Bit-BM2015 - The Home Depot
Neiko Pro 10238B SIlver and Deming Industrial Drill Bit 1/2-Inch Shank with 1-Inch Diameter 
