4 Piece Poly on Cast Iron Caster Set

Listing is for a set of four (4) service caster series #35 swivel casters, two (2) with side locking brakes, with 5" diameter by 2" wide polyurethane on cast iron wheels and maintenance free precision ball wheel bearings. Capableof supporting a total weight of 4,000 lbs. (1,000 lbs./caster).