Meco 6 1/2al Golden Copper Professional Alto Trombone Mouthpiece

6 1/2AL Golden Copper Professional Alto Trombone Mouthpiece Specifications: Material: Copper Alloy Color: Golden Length: 80mm End Outer Diameter: 38mm Connector Outer Diameter: 11mm Connector Inner Diameter: 9mm Features: -Copper alloy body and gold plated surface. -It is computer-aided design system and computer controlled lathe work together to produce the most precise mouthpieces -For Yamaha or Bach, Conn and King Bb tenor slide trombones or Baritones. -Suitable for trombone professional enthusiasts and beginners. Package Included: 1 x Trombone Mouthpiece