seemed to be good quality. must remove and reuse studs from old compressor for mounting the pressure lines on the new one. no new gaskets for pressure lines and no new O rings. no instructions. comes prefilled with 6 oz of PAG oil according to the sticker but I couldn't get any oil out when I turned it over so I hope there is oil in it as they said. held a vacuum first try and charged quickly. seems to be working well after a week.
It did not work well, it only lasted a month and then it broke down, the price is very exaggerated due to the bad quality with which it is manufactured