2mm GP Neck Joint Super Ring for Alto Saxophone, Made of Solid Silver "Nagasawa Seisakusho" original wind instrument boost item. Compatible models: Various Yamaha models Yanagisawa (from T series to current WO) Selmer (Mark VI to Jubilee, models up to Series III) Can be used if the neck joint diameter is the standard size of approximately 24.5-24.7mm. *A 2mm "24K gold-plated 950 silver ring" is attached to the neck joint of an alto saxophone. It produces a sound with richer overtones than the 1mm version. ☆Representative characteristics of each surface finish☆ Solid Silver: Characterized by the soft tone of silver. GP: Characterized by a rich, clear sound. PGP: Characterized by a warm sound. 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 process as rings. Quantity: 1 ring. Material: 950 Silver Ring inner diameter: 24.5-24.7mm (with some variation). Ring outer diameter: 26.5-26.7mm (with some variation). Uses 2mm x 1mm material. Made to be slightly loose. Please give it a try. Nagasawa Seisakusho designs and manufactures solid silver wind instrument boost items in its workshop in Hatoyama-machi, Hiki-gun, Saitama Prefecture, combining the trial playing and manufacturing expertise of a saxophone player who has won international competitions. Thank you for your interest. #NagasawaSeisakusho #Saxophone #NeckRing #Selmer #Yamaha #Yanagisawa