Welcome to the store！Product description:100% brand new and high qualitySix and a half type， the trombone mouthpieceCopper alloy body and silver plated surfaceIt is computer-aided design system and computer controlled lathe work together to produce the most precise mouthpiecesSuitable for trombone professional enthusiasts and beginners.Surface Material: Silver PlatedBody Material: Copper alloyColor: SilverLength: 79mmEnd Outer Diameter: 37mmConnector Outer Diameter: 10mmPackage includes:1 x Trombone MouthpieceThe product inventory sufficient， we will fast delivery， welcome， thank you