54mm Diamond Tipped Hole Cutter for Access Points - Wardsflex
5pcs 11mm Diamond Grit Hole Saw Drill Bit for Tile Glass - Walmart.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