Ultra-Pure's Professional Valve Oil is the premium synthetic lubricant for musicians. The non-toxic, synthetic and odorless valve oil is long lasting and leaves a silky-smooth feel after application. The formula has been revised so now, once applied the user will notice the results on their brass instruments quicker than before. Professional musicians everywhere will note the feel of the Ultra-Pure line, but the professional valve oil offers that little extra lightness that players everywhere love.