inflatable stand up board valve adapter will allow you to connect any standard electric pump, foot pump or compressor to the valve fitting, the standard valve for car and bicycle tires. It works on the majority of inflatable stand up boards. It is also suitable for boats and kayaks which also use the valve for inflation.Be very careful not to over inflate your board or craft, and check the board's pressure frequently. This is an adaptor only. The speed at which your board inflates will depend on the pump used.Because the compressors/tire pumps take time to inflate, it is recommended to inflate the board by hand hand pump until it becomes difficult to pump, and then use the adaptor to top off the pressure. Remove your SUP valve cap and ensure that the valve is sealed for inflation by rotating the central pin into the outer/closed position.Insert the valve adapter into the SUP valve the same way as you would insert the pump hose nozzle. Connect any standard pump to the valve adapter fitting to inflate your board. Monitor board pressure frequently while inflating Delivery Quantity:2PC Product color: black + orange Product size7.8*2CM