You should have this taper tool if you're making your own arrows or repairing.
This high-precision taper tool for wooden arrows sets new standards. The compact tool is made of Zinc and is ergonomically formed. The grinding functions for nock and pointwork precisely, as the angularity is based on the guidelines of the ATA. The production corresponds to German standard and is permanently controlled. German Design and German Quality
The Tool comes with 5/16", 11/32" and 23/64" shaft guides