PERFORMANCE UNDER PRESSURE. Unlock the untapped potential of your SPX3000, SPX4000, and SPX9000 series pressure washers with SUN JOE’s complete line of pressure washer accessories using the transfer adapter specially designed to work with your unit. Simply connect the transfer adapter to the pressure gun handle, and get connected to heavy-duty, high performance attachments to clear a clogged pipe, clean a gutter, soap a car, scour the deck, scrub pool tiles, power-brush patio furniture - and much more!