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.Made of brass with nickel plated, decorated with white stone.4.Fit for Euphonium finger button replacement and repairing.5.Very long time and easy to use,good choice for you to replace your old or broken one.Specifications:Material: Brass with Nickel PlatedColor: SilverSize: 2.13x4.52cm/0.83x1.78inch(Dia x L)Weight: 51gPackage include:3 x Euphonium Buttons Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.