Nilfisk-ALTO and Gerni Pressure Hose Adaptor M21 x 1.5mm x 3-8 No Longer Available
Nilfisk-ALTO and Gerni hobby use pressure washer hose machine end adaptor M21 x 1.5mm x 3/8 (250 bar 3,500 PSI)
This screws on to the threaded high pressure M21 x 1.5mm outlet of a hobby use pressure washer. Then a 3/8' hose screws into the 3/8" - 1/4" chrome threaded point. They're no longer available.
Professional pressure washers have an M22 x 1.5mm thread.
At the moment, standard postage is capped at a maximum of $20 within Australia, so maximise the saving on postage and buy something in the related parts below!