Features: Used for protecting keys and fixing keys to increase service life. Made of cotton, soft and smooth, will not scratch your trumpet. A set includes 10 pcs, easy to replace the old one. Adopt fine workmanship and delicate design. Lightweight by design for easy transport and storage. Specifications: Condition: 100% Brand New Material: Cotton Weight: Approx. 4g / 0.1oz Size: Approx. 1.4cm / 0.6in(Outer Diameter), 0.6cm / 0.24in(Inner Diameter), 0.4cm / 0.16in(Thickness) Color: White Package list: 10 * Trumpet Valve Felt Pads Note: New-style and old-style are shipped randomly 1Used for protecting keys and fixing keys to increase service life. 2Made of cotton, soft and smooth, will not scratch your trumpet. 3A set includes 10 pcs, easy to replace the old one. 4Adopt fine workmanship and delicate design. 5Lightweight by design for easy transport and storage.