Powerbuilt 642667 21/64" Titanium Coated Drill Bit | eBay
Inch and Metric Drill Bit Size Chart - Abbott Aerospace UK Ltd
Alpha 21/64" (8.33mm) Jobber Drill Bit - Gold Series C9LI2164 | tools.com
Dormer 21/64 in 2 Jobber Drill 5967460, Right Hand Cut, Split Point 118° Point, Bright/TiN Finish, 117 mm Overall Length, 4 x D Standard Spiral Flute, High-Speed Steel | RSHughes.com
Cleveland Extra Long Drill,21/64 ,HSS C13193, 1 - Kroger
Dormer 21/64 in A941 Taper Length Drill Bit 5972598, Right Hand Cut, ALCRONA Finish, 165 mm Overall Length, 105 mm Flute, Cobalt (HSS-E) | RSHughes.com
Drill America 1-21/64-in 6-in Black Oxide Coated HSS Silver and Deming Twist Drill Bit in the Twist Drill Bits department at Lowes.com
Drill bit sizes - Dimensions chart for TTP HARD cobalt drill bits
Precision Twist Drill 040021 | 21/64" Diameter 2-15/16" OAL 118 Degree High Speed Steel Bright Finish Screw Machine Length Drill Bit - All Industrial Tool Supply