Dear friends, please read carefully when purchasing, 10 step drill bit, 9 step drill bit, 5 step drill bit, they are just one, not three. Thank you!

Feature :

Product description

This compact set  Step Drill Bits which includes one 4-12mm, one 4-20mm, and one 3-12mm. Two-fluted design can provide faster, smoother cutting.

Note: 

Before starting drilling and screwing, the Automatic Center Punch can be used to mark hole locations. It delivers an automatic, high-impact, spring-loaded strike when pressed against wood, metal, and plastic surfaces. An adjustable cap regulates striking force. It features a heat-treated alloy steel punch with a sharp precision tip and a corrosion-resistant brass body with non-slip knurled grip.

Vastar 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)

Package included: 

3 xVatar Metric Step Drill Bit