NEIKO 10198A Step Drill Bit Set | 5 Piece, 4mm- 35mm | Metric Titanium High Speed Steel Unibit, Stepper Cone Drill Bit | Two Flute Step Down Bits, 135 Degree Point
Two-flute Design for Faster, Smoother Cutting. 6mm shank - 4 to 12mm (9 steps with 1mm increment), 4 to 12mm (5 steps with 2mm increment). 8mm shank - 6 to 18mm (7steps with 2mm increment), 4 to 22mm (10 steps with 2mm increment). 10mm shank - 6 - 35mm (13 steps, 6, 8, 10, 13, 16, 18, 20, 22, 25, 28, 30, 32, 35mm).
