Made of High strength hard plastic. It's 0.8 inch in diameter on the valve side and 0.55 inch diameter on the hose side
Original hose connection nozzles for Tuomico isup pump, replacement hose attachments compatible for most electric sup pump which comes with inner threaded hose and connection parts
Each H3 valve adapter set includes 3 rubber 0-rings (washers) of different thickness,0.24IN(6MM), 0.21IN(5MM),0.13IN(3MM)，please find the right 0-ring to seal better.
Fits Halkey-Roberts valves for connection to paddle board air compressors, inflatable kayak electric pump
If you are not sure wether it will fit your pump or not , please feel free to contact us via Amazon.
