Plate Caster with Pneumatic Wheels Load Rating Range 300 to 999 lb Load Rating 330 lb Tread Sawtooth Wheel Dia 8 in Wheel Width 2 1/2 in Inside Bolt Hole Spacing 2-7/16 in x 4-15/16 in Outside Bolt Hole Spacing 3-3/8 in x 5-1/4 in Caster Brake Type Swivel Lock with Side Pedal Brake Caster Product Group Swivel Caster with Four Position Swivel Lock Caster Sub-Type Swivel Operating Temperature Range -30 Degrees to 120 Degrees F Non-Marking No Wheel/Tread Material Rubber