Step Drill Bits 

Specification:

* The 3 Cutters Come in the Following Sizes:

* 5 step drill bit: 4-12mm (4mm, 6mm, 8mm, 10mm, 12mm)

* 9 step drill bit: 4-20mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm)

* 10 step drill bit: 3-12mm (3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm)

* Color:gold