4 Piece SteelCaster Set with 2 Brakes

Listing is for a set of four (4) service caster series #20 casters, two (2) rigid and two (2) swivel casters with top locking brakes, with 3" diameter by 1-1/2" wide semi steel cast iron wheels capable of supporting a total weight of 1,200 lbs. (300 lbs./caster).