Plate Caster with Flat-Free Wheels Load Rating Range 0 to 299 lb Load Rating 150 lb Tread Smooth Wheel Dia 6 5/16 in Wheel Width 1 5/8 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 Rigid Caster Caster Sub-Type Rigid Operating Temperature Range -15 Degrees to 160 Degrees F Non-Marking No Wheel/Tread Material Rubber Tire Rim Dia 4 in Tire Thickness 1 3/16 in