If you are looking to add warmth and richness to your sound, this may be just the neck for you! Very free blowing, with superb intonation and an even timbre, this neck fits Selmer (Paris), Yamaha, Yanigasawa, and other tenor saxophones. It's beatifully lacquered and heavily hand engraved.The neck tube is solid copper, and you will be amazed at the complexity of the tone. The interior of the tenon is rifled nto ese the production of the lower notes. The tenon diameter is 27.5mm