$500 ea. or $900 for both. Larger cart wheels are 28" dia. 4" wide rims. Rail width is 17". Length is 78" Channel iron is 6"x2". All wheels are round spoke. Smaller cart rear wheels 30" dia. front wheels 22" dia. 3" rim. Rail width 12 3/8" Length 80" channel iron 4"x1 1/2". all wheels are flat spoke.