'Caster Wheel, Load Rating 2500 lb., Wheel Dia. 6, System of Measurement Inch, Wheel Width 2 In., Caster Wheel/Tread Material Steel, Wheel Color Gray, Caster Core Material Steel, Hub Length 2-1/4 In., Fits Axle Dia. 3/4 In., Spanner Bushing Not Included, Core Color Gray, Roller Caster Wheel Bearings, Durometer 179 BHN, Resistant To Water, Oil, Chemicals, Bore Dia. 3/4 In., Caster Temp. Range Available Yes, Caster Temp. Range -30 Degrees to 600 Degrees F, Non-Marking No'