The Trombone Accessories are designed for easy installation and is suitable for most trombones. The set features a secure and snug fit with its slip-on design, providing excellent grip during use. The soft cushion valve reduces key noise and offers a more comfortable playing experience. The rubber feet provide stable support and prevent the trombone from sliding or getting damaged. Features -Color:Black -Material:Rubber -Size:1.10X1.10X0.40cm/0.43X0.43X0.16in -Hole Diameter:4mm -The installation process is simple and straightforward, making it easy to use. -This product is compatible with most trombones, ensuring versatility and convenience. -The slip-on design ensures a secure and snug fit, preventing any unwanted movement or slipping. -The soft cushion valve helps to reduce key noise, providing a smoother and more pleasant playing experience. -The accessory makes cleaning and maintenance a breeze, ensuring that your instrument stays in top condition.Package list: 5 x Trombone Rubber Feet