General Purpose Bolt-Hole Caster 1/2 in Bolt Hole Dia Steel Caster Frame Material Chrome Plated Frame Finish 0 to 299 lb Load Rating Range 220 lb Load Rating 2 Number of Wheels Precision Ball Bearing 3 15/16 in Mounting Height 3 in Wheel Dia 7/8 in Wheel Width Thermoplastic Rubber Wheel/Tread Material 85 Shore A Wheel/Tread Hardness Soft Yes Non-Marking