Plate Caster with Flat-Free Wheels, Load Rating Range 300 to 999 lb, Load Rating 770 lb, Tread Ribbed, Wheel Dia. 8 in, Wheel Width 2 in, Inside Bolt Hole Spacing 2-15/16 in x 4-1/8 in, Outside Bolt Hole Spacing 3-5/32 in x 4-9/64 in, Caster Brake Type No Brake Included, Caster Product Group Swivel Caster, Caster Sub-Type Swivel, Operating Temperature Range -15 Degrees to 160 Degrees F, Non-Marking No, Wheel/Tread Material Rubber, Tire Rim Dia. 5 in, Tire Thickness 1 1/2 in