All Silver Neck Joint Super Ring PGP (for Yanagisawa Soprano) 2mm "Nagasawa Seisakusho" original wind instrument boost item. * Attach a 2mm "pink gold plated 950 silver ring" to the neck joint of a Yanagisawa soprano saxophone. It produces a sound with richer overtones than the 1mm version. 2mm is recommended for soprano saxophones. ☆ 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 resonate 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 is 17.0mm (with some error). Ring outer diameter is 19.0mm (with some error). Made to be slightly loose. Please give it a try. Nagasawa Seisakusho, combining the testing and production by a saxophone player with experience in international competitions, designs and manufactures all-silver wind instrument boost items in their workshop in Kawagoe City, Saitama Prefecture. Thank you for your interest. #SaxophoneAccessories #NeckJoint #NeckJointRing #Yanagisawa #Yamaha #Selmer #Soprano #Sax