Plate Caster with Flat-Free Wheels, Load Rating Range 300 to 999 lb, Load Rating 990 lb, Tread Ribbed, Wheel Dia. 9 13/16 in, Wheel Width 3 3/8 in, Inside Bolt Hole Spacing 2-5/16 in x 7-1/2 in, Outside Bolt Hole Spacing 2-15/16 in x 7-1/2 in, Caster Brake Type No Brake Included, Caster Product Group Rigid Caster, Caster Sub-Type Rigid, Non-Marking No, Wheel/Tread Material Rubber, Frame Finish Zinc Plated, Mounting Bolt Dia. 5/8 in, Number of Wheels 1