The connections immediately to the fumlent or the thread lock are blue, because after connecting and pulling it still etched slightly, the torch is adjusted quite sensitively, I think it’s more suitable for large staining areas, since the nozzle is not small, I use it for domestic purposes, not for car paint, I liked it in in general terms, for painting barbecues and cabinets, the pressure gauge works, everything is regulated normally, the tank is washed well, it does not leak when turned over eSee full review