• rubber & brass
• Boston valve adapter-- sup electric pump adaptor utilizes a standard schrader valve fitting to couple with an air compressor or bike/tire pump.
• Air pump hose replacement-- bike pump or compressor and inflate to the recommended psi
• Boat foot pump hose adapter-- - [multi- ] air valve adapter uses standard american joint accessories to combine air , bicycles, tire pumps, suitable for kayaks, suitable for inflatable boats, kayaks, etc.
• Inflatable surfboard-- - [convenient] lightweight and portable, easy to store, relieve your burden
• Car adapter-- with the valve in the closed position, insert the schrader valve fitting and rotate to lock in place. remove the cap on the fitting, and connect a standard electric pump