Includes 1pc trumpet whistles tube and mouthpiece clip which can help improve the accuracy of the trumpet instrument keystrokes. The trumpet maintenance tool set is make of coppers materials, which is and has a long service life. The trumpet voice pipe and mouthpiece clamp is professional designed and can be easily installed or disassembled. This musical instrument is great for repairing or replacing old parts on your trumpet, improving the sound and . Its perfect for both professional musicians and beginners alike.