3 1/8 in (80mm)SDS-MAX Carbide Tipped Rotary Hammer Core Bit for Concrete Brick | eBay
VEVOR Concrete Hole Saw Kit, 1-2/11", 1-3/5", 2-9/16", 3-5/32", 3-15/16" Drill Bit Set SDS Plus & SDS MAX Shank Wall Hole Cutter w/a 4-1/3" Connecting Rod for Concrete, Cement, Stone Wall, Masonry