- Diameter: 0.562" / 0.578" (14.27 / 14.68mm) Dual bore - Hagmann valve section - Cup size diameter 9- 1/2" (241.30 mm) - Bell made of nickel silver - External slide of bronze - Tuning slide made of yellow brass - Mouth tube 9L - Clear lacquered THIS ITEM IS CURRENTLY NOT AVAILABLE YOU CAN CONFIRM THIS INFORMATION BY CLICKING ON ITEM