It was that it took so long to receive my order. I have installed that which I have received and my compressor is now on line. It was not Master Tools fault. They tried to get my order out. It was just that parts are not available. I have a good unit at home and these things do break down. I will still buy from Master Tool if I need parts. That is if they can find them. Thank You Carlos.Think before you buyThink before you User's recommendation: Think before you buy. If they tell you parts are hard to find, listen.