●It is suitable for repairing and replacing the water valve of trombone musical instrument. ●Our pads are made of high quality cork material, strong and durable, stable working performance and long service life. ●Our cork pads are suitable for trumpet, trombone, cornet, alto horn and other musical instruments. Our rubber end caps are suitable for trombone. ●Package includes 5pcs of cork pads, 5pcs of black trombone slide rubber end caps.Easy installation. ●Rubber Tip, helps prevent trombone from slipping or damaging the floor, the stretch is very good.