Plate Caster with Flat-Free Wheels Load Rating Range 300 to 999 lb Load Rating 350 lb Tread Sawtooth Wheel Dia 8 in Wheel Width 2 in Inside Bolt Hole Spacing 3 in x 3 in Outside Bolt Hole Spacing 3 in x 3-5/8 in Caster Brake Type No Brake Included Caster Product Group Rigid Caster Caster Sub-Type Rigid Operating Temperature Range -40 Degrees to 180 Degrees F Non-Marking Yes Wheel/Tread Material Monoprene Frame Finish Zinc Plated Swivel Raceway Type Double Ball