Amazon.com: Drill Bit Kit, Electric Drill Bit, Professional MultiPurpose for Masonry Concrete(8 * 40 * 65mm) : Tools & Home Improvement
USA Made 14 Inch Diamond Concrete/Masonry Blade, Laser Welded Diamond Segments, 1"/20mm Arbor. 12mm Segment Height. General Purpose Blade for Cured Concrete, Masonry, and Stone. Wet/Dry Cut.: Amazon.com: Tools & Home Improvement
DEWALT Concrete Drill Bit, Centering, Carbide Core Bit Body (DW5907) - Masonry Drill Bits - Amazon.com