ARNOLD 490-320-0003 Tread Wheel, 1-3/4 in L Hub, Steel

No. 650-B 1-3/4 in hub length, 50 lb load rating. No. 750-B 2-3/16 in hub length, 55 lb load rating. No. 875-B 2-3/16 in hub length, 60 lb load rating. No. 1075-B 1-1/2 in hub length, 80 lb load rating. No. 1275-B 2-3/16 in hub length, 90 lb load rating. No. 10275-B 1-7/8 in hub length, 175 lb load rating.