Two Little Fishies ATL5465W 6-Pack Micro Valve Barb X Thread Two Little Fishiest Micro Valve Barb X Thread Micro Fittings For Regulating Air Flow Through Standard Airline Tubing Also for low pressure liquid feed lines for metering pumps, fish display holding cubicles Two Little Fishies Micro Valve Barb X Thread Micro fittings for regulating air flow through standard airline tubin Also for low pressure liquid feed lines for metering pumps, fish display holding cubicles