Low-Profile Easy-Turn Bolt-Hole Caster 1/2 in Bolt Hole Dia 1/2 in Mounting Bolt Dia Steel Caster Frame Material Zinc Plated Frame Finish 0 to 299 lb Load Rating Range 80 lb Load Rating 1 Number of Wheels Precision Ball 2 13/16 in Mounting Height 2 in Wheel Dia 1 5/8 in Wheel Width Thermoplastic Rubber Wheel/Tread Material 40 Shore D Wheel/Tread Hardness Hard Yes Non-Marking