GD1105150066300 G Dia x 70mm OAL-Powdered Metal-130?? Point-Parabolic Screw Machine Drill-FirexFull Description Measurement Type Letter Flute Length 31 mm Drill Bit Size / Cutting Diameter (DC) G Flute Count (NOF) 2 Decimal Equivalent 0.261" Overall Length (OAL) 70 mm Drill Bit Size / Cutting Diameter