The Yamaha YACTRMKIT-U Trumpet Maintenance Kit is a high-quality maintenance kit designed specifically for trumpets. It includes essential supplies to keep your instrument clean and maintain it in excellent condition for years to come. The kit includes a valve casing brush, mouthpiece brush, and polishing cloth, all made with the highest quality materials. With a weight of just 0.25 lbs, this maintenance kit is lightweight and easy to carry. Ensure the longevity and performance of your trumpet with the Yamaha YACTRMKIT-U Trumpet Maintenance Kit.