4 Red 5" Heavy Duty Wheel Casters All Swivel Action Iron Hub No Mark Non Skid Set includes: 4 swiveling caster wheels Wheel Size: 5" diameter x 2"; Plate Size: 4.53" x 3.94"; Bolt Pattern: 3-3/8" x 3" Load Rating: 661 pounds per caster Premium swivel design, with two rows of ball bearings; Double zinc coated galvanized steel Heavy duty non-marking, non-skid polyurethane wheels