A Caster Load Rating Range: 1000 to 2999 lb. , Caster Temp. Range Available: Yes , Caster Wheel Material: Polyurethane , Core Color: Black , Core Material: Steel , Durometer: 95 Shore A , Non-Marking: Yes , Resistant To: Oil, Chemicals, Most Acids , Spanner Bushing: Not Included , Temp. Range: -40 Degrees to 180 Degrees F , Wheel Bearings: Sealed Precision Ball , Wheel Color: Yellow , Wheel Diameter: 6" , Wheel Material: Polyurethane