Cast iron crankcase, stainless steel valves and a slow revving pump also makes this one of the quietest on the market. Our competitors are too scared to mention their pump RPM! With a Smart Start filter supplied, this will help reduce the AMP draw on start up by letting the motor get up to RPM before sucking air through the inlet and helps reduce the load on the motor. Comes with 2 outlets, one out from the water trap regulator and one directly out from the tank for full tank pressure. Built to last with solid puncture proof wheels. Due to its popularity the P17 also comes in a fatboy model and also a vertical design, both featuring 110l tanks. When portability isn't required both these option are perfect with an increased compressed air storage.