Features: 1. Every product has a unique Manufacturing Part Number label on the inner package that proves it has been qualified, including Part Number, Model Number, and inspection date information. 2. If you have any questions about the item, please provide the Manufacturing Part Number for verification. 3. Suitable for B flat trumpet, alto, palm, trombone, cornet, and similar instruments. 4. Our small cork pads are made of high-quality cork material, which is sturdy and durable. 5. The package includes trumpet springs, spring holders, rubber gasket, and finger rings to meet your maintenance and replacement needs. Offers stable performance and long service life. 6. Replace your old felt pads with these soft and smooth cotton trumpet felt pads that won't scratch your instrument. 7. Small cork pads are used to repair trumpets and can be trimmed to fit other models. Specifications: Material: Copper, Metal, Plastic Color: Black, White, Wood Color, Silver Size: Spring: 40x10mm / 1.57x0.39inch (LxD) Cork pad: 9x3mm / 0.35x0.12inch (WxT) White felt: 15x5mm / 0.59x0.2inch (DxID) Black felt: 18x9mm / 0.71x0.35inch (ODxID) Rubber Gasket: 12x10mm / 0.47x0.39inch (ODxID) Spring holder: 18x11.2x4.4mm / 0.71x0.44x0.17inch (LxWxID) Trumpet finger ring: 82x25mm / 3.23x0.98inch (LxOD) Weight: 25g Package Includes: 4 x Trumpet valve cork pads 6 x White felt pads 6 x Black felt pads 3 x Springs 3 x Spring holders 2 x Rubber Gaskets 1 x Trumpet finger ring 1 x Nut