Getmore Metal Paint Gold 7c Trumpet Mouthpiece Golden Material: Metal.Mouthpiece size good for high register and also C trumpet Best choice for you, or giving your friends is a good idea,For Yamaha or bach, conn and king trumpet It is computer-aided design system and computer controlled lathe work together to produce the most precise mouthpieces Length: 8.6cm/3.38",Connector Outer Diameter: 1cm/0.39" Package Includes: 1 x Trumpet Mouthpiece