4 Piece Poly on Aluminum Caster Set

Listing is for a set of four (4) Service Caster Series #30 stainless steel casters, two (2) swivel casters with side lock brakes and two (2) rigid casters, with 6" diameter by 2" wide polyurethane on aluminum wheels capable of supporting a total weight of 4,700 lbs. (1,200 lbs./caster).