Red Paddle Co Inflatable SUP Schrader Valve Adaptor Use your compressor or tire pump to easily reach 20 PSI.Schrader Valve connector Allows you to connect any standard electric pump, foot pump or compressor to the schrader valve fitting, the standard valve for car and bicycle tires. It is also suitable for boats and kayaks which also use the Halkey-Roberts valve for inflation. Adaptor does not feature internal cross piece to depress valve plunger Time to inflate depends on your pump or compressor, this item is only an adaptor.