High Speed Steel Two-Step Drill, 7.0 mm / 8.6 mm

A special drill bit used to make guitar tuning peg holes for installing Rotomatic type tuners.
It drills two different sizes at the same time. It creates an 8.6mm hole in the front of the guitar and a 7.0mm hole in the back. This gives vintage tuners a perfect, tight fit
Manufactured from HSS steel, it is well-suited for drilling into hardwoods.

Total drill bit length: 91mm
Tip diameter: 7.0mm
Second step diameter: 8.6mm
Tip working length: 9.0mm

High quality, made in Japan