Polyolefin Caster Set with Ball Bearings 2 Swivel Lock 2 Rigid

The listing is for a set of four (4) Service Caster series #30 casters, two (2) swivel casters with bolt on swivel locks and two (2) rigid casters, with 6" diameter by 2" wide polyolefin wheel and maintenance free precision ball wheel bearings capable of supporting a total weight of 2,800 lbs. (700 lbs./caster).