Description This product features wind instrument tuning springs designed specifically for brass instruments. These springs are ideal for B-flat trumpets, ensuring smooth key action and reliable piston return. Crafted from durable materials, they provide consistent performance and longevity, making them essential for any musician's maintenance kit. Features -Color:Silver -Material:Metal -Size:4.00X0.80X0.80cm/1.57X0.31X0.31in-Durable material: made from metal spring material, these springs are designed to be durable and provide excellent rebound elasticity.-Precision design: the key spring piston rebound springs are precisely designed to ensure the sensitivity and accuracy of the keys.-Easy installation: the accessory set includes 3 springs, making it convenient for users to replace and install them on their own.-Wide compatibility: suitable for various wind instruments such as trumpets and trombones, meeting the needs of different instruments.-Enhanced performance: the material and precise design of the springs can enhance the player's performance experience and sound quality.Package list: 3 x Trumpet Valve Springs