32-100mm Diamond Starrett Smooth Cut Hole Saw Coated Tip Fine Tooth Core Drill Bits Tools for Glass Stone Calcium Silicate Board - AliExpress
3-1/8 inch Diamond Hole Saw Drill Bit Ceramic Porcelain Tile Glass Marble Granite Quartz Cutting Tip Core 3 1/8 Single Pack - Amazon.com
Norske Tools Diamond Hole Saw NDHST023 1" (24mm) with 1/4" Round Shank for Drilling on Tile, Glass and Marble Bonus Drilling Template Included - Hartmann Variety
7/8" Inch 22.4 mm DiamondSure Diamond Drill Bit Hole Saw for Glass, Tile, Granite, Ceramic, Porcelain, Stone - Amazon.com