Dremel 663 Glass Drilling Bit 6.4mm Pack of 1 by tyzacktools | eBay
Dremel Glass drill bit 786 '26150662JB
Dremel - Glass Drill Bit: Use with Dremel Rotary Tool - 36742104 - MSC Industrial Supply
DrillGlass 1/16" Cylinder Drill Bits On A 1/8" Shank | Fits Your Rotary Tool | Bag of 10, for Glass and Jewelry (11618RB): Amazon.com: Tools & Home Improvement