I was not willing to pay for an original nozzel, so I designed a holder for a 3rd party nozzle.

I am using it for a Karcher WD3, but it could work also with other Karcher vacuum cleaners as well.

The inner diameter is 40mm, but i think that it can host nozzle diameters from 38 to 45mm.

Print with max wall count in order to achieve maximum strenght.

I used ASA to print but PLA can work as well.