Direct replacement for the wheels on a craftsman military ready tool case (built by chicago case). Took a little bit of research to identify, but it was a direct fit (minus the pain of drilling out the original rivets). NOTE: shoot the axles with some silicone or WD, as they are a bit stiff when cold (below freezing) and don't like to roll. Make sure they look like the ones on your case, and the dimensions are right, as Chicago uses a couple different styles and sizes on their cases. Fair price and ridiculously fast shipping. (Got them inTwo days, without expedite).
Ordered 2 sets to have a spare since they were inexpensive, and to save shipping costs.
Saved me having to buy a new tool case, which I pack around with about 80 Lb of tools, as a professional "road warrior".