Minerallac® Jobber Drill Bit, Imperial, #21 Drill - Wire, 0.0669 in Drill - Decimal Inch, 3-1/4 in Overall Length, 2-1/8 in Cutting Depth, 2-1/8 in Flute Length, 0.159 in Shank, 118 deg Point, Standard Point, HSS Cutting Edge, HSS, Bright