These are some well used remnants from my childhood sandbox toys. I believe the 3 1/2" diameter white steel with rubber tractor treaded wheels are from a tru scale tractor I once had. I think the 2 1/2" diameter row crop front wheels and the 5" diameter rear wheels were on a hubley? row crop ford that didn't survive. The tires on these are pretty nice. I offer these as parts to help you fix up that tractor that is wheel-less. Thank you for looking and bidding.