[ALL-INCLUSIVE KIT] Everything you need for instruments maintenance: Mouthpiece Brush, Valve Brush, Flexible Bore Brush, Lint-free Microfiber Cleaning Cloth, Lubricating Valve Oil, and Long-lasting Tuning Slide Grease. | [HIGH QUALITY] Durable, safe, odorless, & more! We carefully choose the best materials to produce the kit. Special scientifically blended lubricating oil from Japan. Child proof safety cap on valve oil, and more! Trust us, it effectively extends the longevity of your trumpet life, enabling to keep it clean and healthy. | [SAVE MONEY] Libretto listens to our customer’s voice & reviews. We keep improving the kit to make it both high-quality and COST-EFFECTIVE. This kit is no doubt a good bargain in any aspect. | [NECESSITIES & GIFT] Libretto care kit has everything for students, musicians, or music lovers’ maintenance purpose. Comes with a light handy hang case, it is a perfect gift for your (grand)child at school/ home. The kit is universally fit for trumpets, cornets, pocket trumpets, etc. | [USER-FRIENDLY INSTRUCTIONS] As trumpeters, we can’t just know how to play, but also learn to keep them clean. We provide the complete and professional instruction manual inside. With just 4 steps as shown in the video, no bother to make your shiny new trumpet dirty again. Clean your horns once every month or two!