Ultra-Pure Professional Valve Oil has a fast, light, and silky-smooth feel that players love. It is synthetic, odorless, and very long-lasting. Our Professional valve oil is the standard weight and is perfect for most instruments. It works well on pistons and rotors. This style bottle does not have a child-resistant cap and is intended for households without small children. USAGE INFO We recommend that you oil your valves at least once a week. Of course, the best results will be oiling each day since the oil will help wash down any contaminants. A freshly oiled horn feels great!