Are you looking for a professional and practical Trumpet Cornet Piston Spring? , ! Our Trumpet Spring must meet your needs. This Cornet Spring Supporting Plate is made of stainless steel, felt, plastic and wood material, durable and sturdy for use. Fine workmanship ensures practicality and durability. Features -Color:Assorted Color -Material:Stainless steel, felt, plastic, wood -Size:4.00X0.80X0.80cm/1.57X0.31X0.31in -Compatible with a wide range of brass instruments including trumpets, cornets, and flugelhorns, making it a versatile choice for musicians. -Crafted from sturdy stainless steel, felt, plastic and wood materials, ensuring performance and protection for your instrument. -Designed to improve the accuracy and smoothness of your playing, allowing you to achieve your desired sound with ease. -Easy to use for both hobbyists and professionals, with simple installation and maintenance instructions included in the package. -Ideal for daily maintenance and upgrades, helping you to keep your instrument in great condition and enhance its overall performance. Package list: 6 x Felt Washers 2 Key Corks 3 x Horn Valve Springs 3 x Support Reeds