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No pilot holes required! A flat drill that can easily dig round molds!

Set of 3, starting from 3.5mm in 0.1mm increments!

A flat drill bit with a center guide that is fixed to a pin vise.

Unlike regular drill bits, it can dig holes with flat bottoms.

Using the center guide allows you to dig clean round holes in a more precise position.

[How to use]

Firmly insert the center guide into the center of the area you want to drill. Rotate slowly clockwise with light force.Dig to the desired depth.

• Set of 3: 3.5mm, 3.6mm, 3.7mm
• The shaft thickness is unified to 3mm, eliminating the need to replace the collet chuck of the pin vise when replacing
• Comes with a case for easy storage and carrying