I just got a set of these, and they are AWESOME> I love them.
links for pics of them in use
http://img.photobucket.com/albums/v6...atrackopen.jpg
http://img.photobucket.com/albums/v6...trackclose.jpg
http://img.photobucket.com/albums/v6...nd/ratrack.jpg

It took all of ten minutes to assemble. Took me more time to get the boxes out of my truck and up my steps! Easy peasy! Love the price and they are very very easy to roll about anywhere i want them. I have the urge to roll them around the house, just because I can. Rats-on-patrol.
God, I need to get out more.
wolfy