2mm GP Neck Joint Super Ring for Silver Tenor Saxophone "Nagasawa Seisakusho" original wind instrument boost item. Compatible models: Yamaha various models Yanagisawa (from T series to current WO) Selmer (Mark VI to Supreme) * A 2mm "K24 gold-plated 950 silver ring" is attached to the neck joint of the tenor saxophone. It produces a sound with richer overtones than the 1mm version. ☆ Typical characteristics of each surface finish ☆ Pure silver: Characterized by the soft tone of silver. GP: Characterized by a rich resonance with good articulation. PGP: Characterized by a warm resonance. Effects: Easier to produce altissimo notes. Altissimo notes become fuller. Altissimo notes sound better. In addition, many users have reported improvements in overall resonance and tone stability. Made using the same silver soldering and polishing method as rings. Quantity: 1 ring. Material: 950 silver Ring inner diameter: 27.6mm (with some error). Ring outer diameter: 29.6mm (with some error). Made to be slightly loose. Please give it a try. Nagasawa Seisakusho, combining the experience of a saxophone player who has won international competitions with manufacturing, designs and produces all-silver wind instrument boost items in their workshop in Hatoyama-machi, Hiki-gun, Saitama Prefecture. Thank you for your interest. #NagasawaSeisakusho #Saxophone #NeckRing