Features: 1.Every product has a unique Manufacturing Part Number label on the inner package that proves it has been qualified,which include Part Number,Model Number and inspection date information;2.If you have any questions about the item,please provide us the Manufacturing Part Number for checking,your profits will be guaranteed.3.Good workmanship, compact and lightweight,easy to carry, convenient and practical.4.Elegant silver look,Made of Metal plated.5.Great accessory for marching tuba players.6.Applicable to the 3 vertical keys tuba.Specifications:Material:Copper platingColor:SilverSocket Diameter:4 x 4mm/0.16 x 0.16inchStraight Rod Length:18.4cmWeight:73 gPackage include:1 x Tuba Lyre