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Amazon.com: DaduoRi 1 1/4 Inch (32mm) Diamond Hole Saw with Pilot Bit, Diamond Tip 1.25" Tile Hole Saw Bits with Guiding Drill Bit Easy Drilling for Ceramic Tile, Glass, Porcelain, Marble, Granite :
Lenox, Hole Saw Blade, General Purpose, 1-3/8 inch
Monster 1-5/8 in. Brazed Diamond Core Bit/Hole Saw for Granite, Quartzite, Marble, Concrete, Porcelain, Ceramic and Other Stones BDBP0158 - The Home Depot