These trumpet slide rings are specially used for the trumpet, made of rubber materials, , light weight and tough, durable to use. The trumpet slide rings will be a perfect present for your friends who like to play the trumpet cornet. Features -Color:Black -Material:Rubber -Size:1.20X1.20X0.10cm/0.47X0.47X0.04in - Trumpet rings can be used to stop the tuning tube blockage, to avoid noise, not affect the original instrument effect. - Durable and lightweight, replacement parts for trumpet, rubber stop rings is a nice buffer, prevent noise. - Trumpet rings provide good results for the use of trumpet, to ensure the stable use of the . - Trumpet accessories, trumpet tuning tube rubber ring is anti-noise and has good elasticity, easy to use. - The trumpet rings have sufficient quantity to meet the needs of your daily life, you can prepare them as a backup, or share with others. Package list: 15 x Trumpet rings