Abe Herbaugh designed Mouthpiece Jig. Securely holds your mouthpiece while filing and sanding, stem can rotate 360 degrees and lock at any position. Using the jig will help relieve hand fatigue, as well as giving a solid hold of your mouthpieces for more precise hand work.

Comes with 4 undrilled hard maple mandrels with brass threaded inserts. You will need to use a lathe or self centering fixture to accurately drill the mandrels with the exact drill bits you use for your mortise.