Regular viscosity formula is good for all around use in any piston valves. 60ml dropper-top bottle with a childproof cap. Yamaha synthetic valve oil is more consistent than traditional oils, giving it better stability in different temperatures. In addition to a smoother feel, you will also be adding to the life of your instrument thanks to a powerful corrosion inhibitor contained in the oil. Designed for trumpets, mellophones, flugelhorns, baritones, euphoniums, tubas, or any other piston-valve brass instrument.