The Ultra-Pure Professional Valve Oil offers outstanding lubrication for piston valves, rotary valves or trombone hand slides. Ultra-Pure Oil is a non-toxic, synthetic oil that provides long-lasting lubrication that can be used without worry of build-up or discoloration to valves. Ultra-Pure Oil is endorsed by top players such as Bobby Shew, Wynton Marsalis, Arturo Sandoval, Chris Botti, Alison Balsom and Kiku Collins. The Ultra-Pure Professional Valve Oil is available in a 2 ounce bottle with a dropper applicator.