Unfortunately no adjustable nozzle just air pressure, becuz Harbor Freight blaster... The copper tube that Eric got ended up narrowing the media spread too much. We tried blasting without the copper tube and it helped spread, but still didn't solve our vacuum problem. Tried blasting at low PSI (40 IIRC), then tried going up to 100psi. Higher pressure cleaned the valves better, but also piled up the media. I'm by no means knocking the plates, they are really nice. But I think someone else should try them out and see. We also had been doing other things to Eric's car and left the blasting for last. We were tired, and probably quick to throw in the towel for the day.