Rubber Swivel 12mm Stem Caster Set Total Lock Brake

Listing is for a set of four (4) Service Caster Series #20 swivel casters, four (4) swivel 12mm threaded stem casters with total lock brakes, 3.5” diameter by 1-1/4” wide thermoplastic rubber wheels. Supports a total weight of 920lbs (230lbs/per caster).