Mosmatic Wall Boom Extension w/Dual Inner HosesDescription When I was planning out my wash bay, I really wanted to add a boom pole so I'd be able to just walk around whatever car I was washing and not drag a pressure washer hose all around. I ended up ordering a Mosmatic Boom Pole and mounting it in the center of my wash bay. It has become one of my favorite features of the OG wash bay. You would use this to extend the length of your boom pole. It has two inlets and outlets so you could run air in