A flat drill that can carve round molds without the need for pilot holes!
This is a flat drill bit with a center guide that is fixed to a pin vice. Unlike
the spin blade , it can carve round molds with flat bottoms without drilling pilot holes in advance.

[How to use]
1. Firmly insert the center guide into the center of the area you want to drill.
2. Turn it slowly clockwise with light pressure.
3. Continue digging to the desired depth.

Set of 5: 1.0, 1.5, 2.0, 2.5, 3.0mm
The thickness of the shaft is standardized to Φ3mm, eliminating the need to replace the collet chuck of the pin vice when replacing.
Comes with a convenient case for storage and carrying