Blue Juice Valve Oil - 50ml Bottle. 
Designed for use with all valved instruments, piston or rotary. The designers objective was to create an oil that gave fast valve action yet retained its lubracative integrity for as long as possible. Blue Juice also has bacterial inhibitors that retard bacterial growth. Blue Juice is non-corrosive to all current materials used in the manufacture of musical instruments, and can help keep them internally clean.