I have seen this item from various sellers, and after careful consideration, decided to purchase. There has been mixed media attention regarding this item and its compatability with the range of Karcher washers. I own a K2 series washer, and having seen this item on a TV shopping channel considered its purchase. Initially the TV shopping channel stated it works with all Karcher washers, then changed its mind and stated it only works with K3 seriesd and upwards. It then reverted back to its original advice and stated it worked with all Karcher pressure washers. On the Amazon website it states it includes use by K2 pressure washers, so I bought one. Yes it will work but I found it will not operate at its specified power output, more noticeable when using the Dirtblaster, with a very distinct reduction in power. When I used the detergent dispenser, my K2 series washer failed to provide any detergent whilst using this suction hose. From my experience, only purchase if you have a K3 series and above.