I've got a different one (but also Amazon Chinese made) and it didn't work well with the hose and fittings that came from Classic Auto Air. I will probably take the car to a local AC shop to get the hoses made up. Although, the problem may be the fittings or the hoses. The crimp is only supposed to hold the fitting to the hose, not create the seal. Does anybody use a sealant on the hose?