General Purpose Bolt-Hole Caster 7/16 in Bolt Hole Dia 7/16 in Mounting Bolt Dia Steel Caster Frame Material Zinc Plated Frame Finish 0 to 299 lb Load Rating Range 165 lb Load Rating 1 Number of Wheels Precision Ball 3 7/8 in Mounting Height 3 in Wheel Dia 1 in Wheel Width Thermoplastic Rubber Wheel/Tread Material 85 Shore A Wheel/Tread Hardness Soft Yes Non-Marking