RWM Casters FSR-0830-12 8" Diameter X 3" Width Tread Forged Steel Wheel With Roller Bearing For 3/4" Axle, 5500 lbs Capacity 3/4" Axle diameter, 3-1/2" hub length and 5500lbs capacity^Forged steel wheel with straight roller bearing^Temperature range from -50 degree F to 800 degree F^Hub length can be shortened or lengthened to order^8" Wheel diameter, 3" wheel width