Step Drill Bit 5-28.3 mm (10 Hole)
Irwin Step Drill Bit. Number of hole sizes: 10.Hole diameters: 5, 7.5, 10, 12.5, 15.2, 18.6, 20.4, 22.5, 25.5 and 28.3mm.
Irwin Step Drill Bit. Number of hole sizes: 10.Hole diameters: 5, 7.5, 10, 12.5, 15.2, 18.6, 20.4, 22.5, 25.5 and 28.3mm.