The DuroMax Pressure washers come in a couple of models. There is the basic model and the turbo nozzle model. The XP2700PWS is the more basic model that is a 2700 PSI, 2.3 GPM, 5 HP, gas engine pressure washer; while the XP3100PWT is a 3100 PSI, 2.5 GPM, 7 HP, gas engine, turbo nozzle pressure washer. Both of these models come equipped with a spray gun extension wand with a quick connect fitting and a rear hose connect for maximum convenience and simple connections. Lastly, these DuroMax pressure washers are EPA and CARB compliant, which permits operation of them in all 50 states.