Lance,
I cannot believe those "SOLD" for that price.....I suppose anything is possible. The kind of dual wheel spacers that you get kind of depends on the duty of the tractor. I use these on my O and I reversed the inside rims to give it a more narrow stance.
http://www.ebay.com/itm/Dual-Wheel-S...0ligWkHt3Ew5wg
Granted I don't get "true" traction, but they have never slipped on me either, with them but they do seal around the rim, they are affordable and keep the snow/dirt out.
Cub Cadet 123