Thanks Wade. I've tried both and neither works. The quick connect coupler on the compressor itself has a sleeve on it that can be pulled back, but it is already halfway back. It has a male end that screws into the compressor. Sears also supplied a quick connect coupler with a female end and it works fine when I plug the quick connect ends into it. Unfortunately, since it has a female end, it won't screw in to the compressor. This thing was a gift so I guess I will have to go over to Sears and attempt to locate someone who can tell me exactly what is wrong. I even ordered a replacement coupler from Sears, thinking this was defective and it arrived exactly the same - with that sleeve halfway down and not accepting of the corresponding parts. Very strange.