Plate Caster with Pneumatic Wheels Load Rating Range 300 to 999 lb Load Rating 770 lb Tread Diamond Wheel Dia 15 3/4 in Wheel Width 4 in Inside Bolt Hole Spacing 4-3/4 in x 6-5/16 in Outside Bolt Hole Spacing 4-3/4 in x 6-5/16 in Caster Brake Type No Brake Included Caster Product Group Rigid Caster Caster Sub-Type Rigid Operating Temperature Range -20 Degrees to 120 Degrees F Non-Marking No Wheel/Tread Material Rubber Tire Rim Dia 8 in Tire Thickness 4 in