I ended up buying a used combo kit from the Amazon warehouse because it was cheaper. I understand they either wanted to use it or something with a mark (1 inch) in the description. However, the whole set was damaged. The compressors were riddled with rust and corrosion, the wiring to one compressor had been completely cut off, almost everything was missing from the accessories, the hoses looked torn, the stickers had been removed. This is not a star for Amazon or Viair or if you bought this kit new. It's for what I got and the displeasure that someone would try to sell it to someone else. Please buy a new one if you consider such a kit. On top of that, shipping was fast, customer service was great, and the returns process is pretty good - so far.