The NEIKO 10198A Step Up Drill Bit set is your all-in-one drill bit set, drill a range of different sizes with a single bit. Looking to expand holes or drill into metal, this drill bit in the shape of a cone has multiple sizes in one. A conical shaped bit that allows you to drill a variety of hole sizes without needing to change between bits. The tip of the drill bit drills the smallest hole and as you step or drill further down the diameter increases as you drill.

1 x 6mm shank: 4 to 12 mm, 9 steps(4, 5, 6, 7, 8, 9, 10, 11, 12mm)

1 x 6mm shank: 4 to 12 mm, 5 steps)4, 6, 8, 10, 12mm)

1 x 8mm shank: 6 to 18 mm, 7 steps(6, 8, 10, 12, 14, 16, 18 mm)

1 x 8mm shank: 4 to 22 mm, 10 steps(4,6,8,10,12,14,16,18, 20, 22mm)

1 x 10mm shank: 6 to 35 mm, 13 steps(6, 8, 10, 13, 16, 18, 20, 22, 25, 28, 30, 32, 35 mm)

1 Blow Mold Carrying Case