• rubber & brass
• Boat air valve adapter: sup electric pump adaptor utilizes a standard schrader valve fitting to couple with an air compressor or bike/tire pump.
• Paddleboard accessory: because the /tire pumps take time to inflate, it is recommended to inflate the board hand until it becomes difficult to pump, and then use the adaptor to top off the pressure.
• Boston valve adapter: fit for inflatable boat, kayak, caone, paddle board, etc.
• Air pump adapter: fit for inflatable boat, kayak, caone, paddle sup board, etc.
• Sup pump adaptor: - [convenient] lightweight and portable, easy to store, relieve your burden