Bolt-Hole Caster, 7/16 in Bolt Hole Dia., 13/32 in Mounting Bolt Dia., Zinc Plated Frame Finish, Light Load Rating Range, 110 lb Load Rating, 1 Number of Wheels, 2 3/4 in Mounting Height, 2 in Wheel Dia., 3/4 in Wheel Width, Rubber Wheel/Tread Material