Digital Air Flow Regulator with gauge for 1/4" paint spray gunDigital Air Regulator with gauge for paint spray gun by NO NAME Brand Designed to fine tune your paint spray gun pressure settings right on the handle of the sprayer. Always adjust pressure on the fully open air flow (squeeze the trigger to start air flow). Open the know all the way counterclockwise and on the open air flow, you will see the current working pressure. Adjust as needed. We recommend this regulator only for fine tunning + 10%. In other