Compressor kit

Whne I purchased my 2000 Jimmy used, it did not have the compressor hose or attachements. When I inquired thru the dealer, the kit was rather pricey. I have found what I think is the proper hose at Home Depot. There are a number of attachments, but I don't know what I need.

Is anyone familiar with the kit and can tell me what to purchase or direct me to a websuite that shows what the kit contains?

thanks