Spiral Violin Reamer, TIN Coated Herdim Spiral violin/viola Peg Reamer, standard size, TiN Coated, 1/30 taper. TiN Titanium - nitride coating triples the reamer's edge life, protects it from corrosion and reduces friction during use.  By allowing a smoother and gentler cut, it also reduces the stress placed on the pegbox.  The TiN coating does not affect the sharpness of the reamer whatsoever.  The new spiral cutting edges allow undreamt of cutting quality. The wood fibers are cut at an angel which makes these reamers completely chatter free, ensuring perfect round hole.  Especially well-suited for working on sensitive old instruments whose pegboxes often have very hard medullary rays.  Polished rosewood handle.    Mathcing Peg Shaper T-33, sold separately