Low-Profile Easy-Turn Bolt-Hole Caster 3/8 in Bolt Hole Dia 3/8 in Mounting Bolt Dia Steel Caster Frame Material Zinc Plated Frame Finish 0 to 299 lb Load Rating Range 175 lb Load Rating 2 Number of Wheels Precision Ball 2 3/4 in Mounting Height 2 in Wheel Dia 3/4 in Wheel Width Thermoplastic Rubber Wheel/Tread Material 85 Shore A Wheel/Tread Hardness Soft Yes Non-Marking