Antique Factory Cart Cast Iron Vintage Wheels Railroad Dolly Industrial. Nice set of antique wheels, not sure of their actual original purpose, but very solid overall in great shape, a bit rusty and pitted in spots, but would clean up nicely. very nice original items. Wheels measure a hair under 13” in diameter. Hole in the center seems to be about 1 3/16 Tread is about 1 3/4 wide They do weigh a bit over 13 1/2 pounds apiece