Manually control the flow of vital O2 or turn the fuel pump on or off Made of chrome-plated copper, air never leaks. Not suitable for CO2 systems Inlet diameter: 8 mm, outlet diameter: 4mm. Total size: 78mm. A check valve protects your air pump and a suction cup fits standard air valves and piping. Scope of delivery: 1 four-hole splitter head 8 turns 4 mm, silver
