The WYNNsky tire inflator arrived and it was simple to assemble. It does not come with the fitting for the air hose so I bought one for a buck at Lowes. I added white teflon tape to the threads and tightened them down. Fired it up and there were no leaks. The gauge appears to be accurate compared to my old one. I find the inflator to be very well constructed and feel it earns its "heavy duty" name. Looks just like the ones at the gas station in the good old days. I hope it lasts. It looks like it should. Very happy so far.