The Quantum Mouthpiece is made for Big Band, R&B, Top 40, Jazz Combo, and Fushion Band. The QUANTUM mouthpieces is made from chrome-plated brass. As a rule of thumb, metal mouthpieces are more durable. The Quantum Metal Soprano Saxophone Mouthpiece is available in Facings #5-#10. Mouthpiece is finished in Chrome. Includes Runyon Ligature and Cap. No spoiler.