WIDIA, 21/64 in Drill Bit Size, 9.00 mm Shank Dia., Extra Long Drill Bit - 431D90|TDD105Z08334 - Grainger
Drill America 21/64 in. High Speed Steel Premium Short Drill Bit (6-Piece) D/AST21/64P6 - The Home Depot
Drill Bit Decimal Equivalency Chart - Vermont American
Century Drill & Tool Tap-Plug 3/8-24NC 21/64" Brite Drill Bit - 95408 | Blain's Farm & Fleet
21/64" Dia. x 10 mm Shank x 47 mm Flute Length x 89 mm OAL, 3xD, 140 Degree, TiAlN, 2 Flute, Coolant Thru, Round Solid Carbide Drill Series/List #5601 MT9398764 - First Industrial Supplies
Alpha 21/64" (8.33mm) Jobber Drill Bit - Gold Series C9LI2164 | tools.com
Milwaukee® SHOCKWAVE™ 48-89-4618 Hex Shank Impact Drill Bit, 21/64 in Drill - Fraction, 0.3281 in Drill - Decimal Inch, 2-47/64 in D Cutting | Dillon Supply
Powerbuilt 642667 21/64" Titanium Coated Drill Bit | eBay
Alpha 21/64" (8.33mm) Jobber Drill Bit - Gold Series 9LI2164 | tools.com