General Purpose Bolt-Hole Caster 7/16 in Bolt Hole Dia 7/16 in Mounting Bolt Dia Steel Caster Frame Material Chrome Plated Frame Finish 0 to 299 lb Load Rating Range 175 lb Load Rating 1 Number of Wheels Precision Ball 4 in Mounting Height 3 in Wheel Dia 1 in Wheel Width Neoprene Wheel/Tread Material 65 Shore A Wheel/Tread Hardness Soft Yes Non-Marking