Material: Copper Color: Gold / Silver Size: -3c: The cup is larger, the application surface is more comprehensive. -5c: The sound is bright and full, suitable for players with good endurance. -7c: The sound is bright and used by most students and professional players worldwide. Features: - Trumpet mouthpiece 3C 5C 7C 3 size optional. - Made of high-quality copper alloy. - Compact size, easy to install. - Gold and silver plating design, twinkling and stylish. - Compact size, easy to install. Package Weight : Gold: 98 G / 3.46 Ounces Silver: 103.0 G / 3.63 Ounces Package Dimensions (L*W*H) : 95*30*30 MM / 3.74*1.18*1.18 Inches Packing List: 1 x Trumpet Mouthpiece