"Experience lightning-fast valve action with Al Cass 341SG Fast Valve Oil. Its unique formulation ensures you can keep up with even the quickest tempos. Not just for valves, this oil can also be used on trombone slides and other instrument keys. Its tough formula won't separate in any weather, making it a must-have for marching musicians. Get ready to play confidently with Al Cass 341SG Fast Valve Oil."