Perfect for players at any level, Yamaha Wind Instrument Care & Maintenance Kits provide an easy maintenance solution for trombone players. Each kit is specially designed to contain the highest quality cloths, brushes, swabs, and lubricants to keep any instrument in top playing condition. Each kit also features an easy-to-understand care & maintenance manual and re-closeable plastic bag for item storage. The trombone maintenance kit features the ever-popular Trombone Slide Oil. Yamaha Trombone Slide Oil is a favorite among professionals and students alike thanks to its easy application, quick action, and long lasting performance.