Excelente lava muy bien el chasis, con suficiente presión de aguaWorks. I am not sure if it's a gpm issue or what, but I have a ryobi 2700psi 1.1 gpm electric pressure washer but the water coming out from the nozzles could not be more than 400psi so it's not good for cleaning but it does push loose dirt and rocks awayfacil de usar,buena manufacturaThis is the best residential concrete surface washer I have ever used. With just over 12000 square feet of hard surface to clean it use to take me up to 2 hours to clean. With this simple device connected to my pressure washer I can now clean that same hard surface area in less than 30 minutes. My wife was skeptical, but after I showed her how easy it was, she was amazed.The orifices of the nozzles clog in early use due to manufacturing metal shavings entering nozzles. I cleaned out with a pin a couple of times, removing the individual nozzles from the bar. Once they were cleared it worked fine but without unclogging nozzles the plugged one delivered almost no water. I'd buy it again with the above caveat for the handy. Nozzle clogging was only reason for Four Star rating.I really like how solid it isOnly problem I have with it is there was mettle shavings in it probably from assembly under standable but should have been checked before selling after taking out the clogged tip and rinsing it out good making shure it didn't have any more shavings in it did I finally see how good it was I rather had just been able to use it right away rather then repair it then use it after fixing the problem it worked great cleaned great under car and even cleans the concrete good makes a push broom look like hard work lol much better then a push broomWorks awesome to wash the underside of a car or truck. When using in broom mode, it will need down pressure to keep from lifting if you have a lot of pressure from your pumpI would not buy it again or recommend it to someoneEntree d’asphalte