Having spent about 9 hours trying to clean my drive with a 90 bar pressure washer, of which in the end the hose split and the overall result was very poor indeed, it ended up looking very patchy. I looked around for a pressure washer with at least 120 bar pressure. The price I paid for a grade A product was a bargain. I have to say it's simply fantastic! I washed the whole drive again without detergent in a mere fraction of the time. This has been a brilliant purchase.