Yamaha Synthetic Rotor Oil, Bottle.
Yamaha rotor oil is an ultra-light petroleum-based oil specifically refined to moisten and protect the close-fitting interior surfaces of rotary valves. Use in conjunction with Yamaha Rotor Spindle Oil for optimum performance on french horns, trombone F-attachments, and any other rotary valves.
• Newly developed synthetic formula provides enhanced effectiveness
• Pocket-sized design easily fits in instrument cases
• Designed for students and professionals