8" x 1.75" steel wheel, 2-3/16" hub length. 1/2" diameter centered hub with ball bearing. Ribbed tread pattern. 60 lb load rating. Steel centered 8" x 1.75" steel wheel, 2-3/16" hub length 1/2" diameter centered hub with ball bearing Ribbed tread pattern 60 lb. load rating. WARNING: Cancer and Reproductive Harm - www.P