Caster, Load Rating Range 300 to 999 lb, Load Rating 350 lb, Tread Centipede, Wheel Dia. 10 29/32 in, Wheel Width 4 7/64 in, Inside Bolt Hole Spacing 10 5/8 in x 3 in, Outside Bolt Hole Spacing 3 in x 3 5/8 in, Caster Brake Type Face Contact Brake, Caster Product Group Swivel Caster with Brake, Caster Sub-Type Swivel, Operating Temperature Range Not Rated, Non-Marking No, Wheel/Tread Material Rubber, Tire Rim Dia. 3 1/2 in, Frame Finish Zinc Plated, Tread Color Black