This O ring seal kit fits the Aldi Workzone and Ferrex pressure washer. This kit ONLY FITS the Newer type pressure washer with the trigger gun. They fit on the (Male End) for the trigger gun. Note this kit DOES NOT FIT THE COMPACT Version of pressure washer. PLEASE CHECK before purchasing. This is not a Aldi Workzone Ferrex OEM product. The Aldi Workzone Ferrex brand name and logos are the registered trademarks of their respective owners. Any use of the Aldi Workzone Ferrex brand name or model designation for this product is made solely for the purposes of demonstrating compatibility.