I have 2 sets of wheels that I purchased from K-9 Carts, one for Drag and one for Slim Shady, my paralized ferrets. Well Drag never got to use his and Slim hates his! Slim will be undergoing surgery soon to help with the same problems as Drag had. So before buying wheels please contact me, the carts I have are not really ferret friendly and I don't want to see anyone else spend money thats a waste. I'm out 200 dollars for my carts and they are dust collectors. Drags cart is now very sentimental to me as it was a sign of hope for his recovery and I thought I'd see the day he would walk again. But now I can only hope he is walking and running over the Rainbow Bridge. So if you would like to contact me for more info please do so, and please don't buy carts that haven't already been sucessfully tested on ferrets. These carts could possibly work but need modification. I'm going to talk to the K-9 Cart folks next year at the vet convention and maybe I can help them improve the ferret carts so they are usable. Thank you, CJ 24 Carat Ferret Rescue And Shelter still missing Drag...... [Posted in FML issue 3500]