Features: 1.Every product has a unique Manufacturing Part Number label on the inner package that proves it has been qualified,which include Part Number,Model Number and inspection date information; 2.If you have any questions about the item,please provide us the Manufacturing Part Number for checking,your profits will be guaranteed. 3.Heavy 1.5 C size rich tone shape trumpet mouthpiece accessories. 4.Pure tone, transparent, bright, fine workmanship, easy to install. 5.Great for intermediate to advanced players. Specifications: Material:Brass Process: Gold Plating Color:Gold Brand name: Unbranded Size:8.75x2.7cm/3.44x1.06inch(L x W) .