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This drill bit is used for the following kits:
- Round Top (8mm Euro) Pen/Pencil
- Flat Top Pen/Pencil
- Perfect Fit Pen/Pencil (1 of 2 drill bits needed)
- New Series Pen

Notes:
- Important: The Perfect Fit Pen Kit also needs the 11/32" drill bit.
- Used in place of the 21/64" or "O" bit recommended by Berea and in the instructions. The "O" bit is too tight and the 21/64" can be too loose of a fit.
- See the Drill Bits and Drilling FAQ for more general information.