Dremel 663 Glass Drilling Bit 6.4mm Pack of 1 by tyzacktools | eBay
Dremel FlipBit 1/8 In. Diamond Glass Drilling Bit - Anderson Lumber
Dremel 1/8 In. Diamond Glass Drilling Bit - Jed's Hardware & Garden Center
DrillGlass Diamond Core Bit Set for Glass and Tile | Compatible with Your Drill, Drill Press and Dremel Tool | Beginner's Instructions Drilling Guide | DCBSet - Amazon.com
Dremel 662DR - 1/8 inch Glass / Tile Drill Bit — widgetsupply.com