4 Piece Polyurethane Bolt Hole Caster Set with 2 Brakes

The listing is for a set of four (4) service caster series #20 1-7/8" expanding stem swivel casters, two (2) with top locking brakes, with 3" diameter by 1-1/4" wide red polyurethane wheels capable of supporting a total weight of 1,200 lbs. (300 lbs./caster).