I carry 1 serpentine belt, 1 AC Belt, 1 of every filter on the coach. 1 toolbox loaded, 1 spare tire and wheel(came with the coach and it's way to heavy to take out of the bay). 1 110 PSI compressor, 2 bar clamps to glue cabinet doors back together, 1 cartridge of Dicor, duct tape, sanding paper, cordless drill and hammer drill and 1 Dremel and assorted discs. 1 gallon of Transynd, 1 gallon of Delo oli and 1 gallon of OAT anti-freeze. Lots of wax and RV washing stuff. I also have a hand axe and a 4 lb sledge hammer and a can of Kroil.