ZUINIUBI Trumpet Mouthpiece 3C Size for Yamaha or Bach Conn King Trumpet (Silver) 3C trumpet mouthpieces, it produces a clean and rich tone. For Yamaha or Bach, Conn and King Trumpet, great choice for your kids to practice. Suitable for all levels Computer-aided design system and computer controlled lathe work together to produce the most precise mouthpieces Weight:approx 125g, Size:approx 89mm*29mm.