kgsQTY for 20ft:7960pcs Operation: step 1:Pull out the air hose, make sure the nozzle lever is in the up position.step 2:Place the nozzle over the valve stem of the tyre or other item you need to inflate.step 3:Lock the nozzle to the vale stem by pressing down on the lever.step 4:Connect the cigarette lighter or clamp on the car, Switch the compressor/spotlight switch to the COMPRESSOR position to