haa0041 's Japan Review

This is a must-have for anyone who attaches rings to folded flights.
It is possible to drill holes precisely in the same position on three flights at the same time.

If the flight is set in line with the guide, the hole could be drilled without any misalignment.
(The guide is well centered, so there is no need to worry about misalignment of holes.)
The sharpness is also fine, and I recommend it.