Monster 1-1/2 in. Brazed Diamond Core Bit/Hole Saw for Granite, Quartzite, Marble, Concrete, Porcelain, Ceramic and Other Stones BDBP0112 - The Home Depot
Sintered Diamond Hole Saw 2 1/2" - TroxellUSA
1-1/2 inch Chrome Series Diamond Hole Saw Drill Bit – Drilax Tools
1 1/2 Inch Diamond Drill Bit Tile Hole Saw Ceramic Porcelain Quartz Gr – Drilax Tools
Drilax 1 1/2 Inch Diamond Hole Saw Drill Bit Tiles Glass Fish Tanks Marble Core | eBay
Bosch 1/2-in Diamond Arbored Hole Saw in the Hole Saws & Kits department at Lowes.com