Features: Easy to use, our Valves oil provides long terms lubrication for piston valves, reduces noise and prevents corrosion. The perfect solution for maintaining and protecting your valuable musical instruments. Each bottle contains 30ml of maintenance oil, ensuring you have enough to keep your instrument in top condition. Suitable for most instruments including trumpets, trombones, French horns, tubas, euphoniums and more. Don't let sticky valves or unwanted noise hinder your musical experience. Use our piston Valves oil and enjoy the benefits of superior lubrication and protection for your instruments. Specifications: Materials: Oil Capacity: 30ml Size: about 80x30mm/3.15x1.18inch Package Includes: 1Pc Valves Lubricating Oil note: Please allow 1-2cm errors due to manual measurement, make sure that you not mind before you order. Due to difference between different monitors, the picture may not reflect the actual color.