Plate Caster with Pneumatic Wheels Load Rating Range 300 to 999 lb Load Rating 350 lb Tread Sawtooth Wheel Dia 10 5/8 in Wheel Width 3 1/2 in Inside Bolt Hole Spacing 3 in x 3 in Outside Bolt Hole Spacing 2-5/8 in x 3-5/8 in Caster Brake Type No Brake Included Caster Product Group Rigid Caster Caster Sub-Type Rigid Non-Marking No Wheel/Tread Material Rubber Tire Rim Dia 4 3/4 in Tire Thickness 1/4 in Frame Finish Zinc Plated Tread Color Gray Mounting Bolt Dia 3/8 in