product arrived well packaged and as described. All goods were of decent quality in this price range. It was nice to have a 110V power supply included as well as NEMA 5-50 hardwiring. I've only used 220V, but I'm pretty sure 110V would require a 20A minimum breaker. Cut a bundle of 3/16 and 3/8 steel with no problems so far. The only reason for the 4 star rating was that the supplied pressure regulator did not have pre-drilled mounting holes in the block, although a small separate mounting bracket was included. I didn't want to just drill holes in the case to mount it, so I had to make a plate to mount it. I believe the unit can be disassembled to find the correct spacing for the mounting screws.