Single-Flange Track Wheel 3200 lb Load Rating 3000 to 5999 lb 8 in Wheel Dia 3 1/4 in Wheel Width Iron Wheel/Tread Material Extra Hard Wheel/Tread Hardness Rating 188 BHN Wheel/Tread Hardness Roller Wheel Bearing Type Single Flange Tread Shape For Axle Size 1 in Iron Wheel Core Material Yes Non-Marking 2 1/2 in Hub Length