Each caster is rated for 250 lbs. This caster will add approximately 6" to the height of the posts. Threaded stem is 1/2" d Great for adding mobility to your wire shelving units.Threaded stem caster, swivel type with brake.Each caster is rated for 250 lbs.This caster will add approximately 6" to the height of the posts.Threaded stem is 1/2" diameter.

Rubber Swivel Caster with Brake - 5" Diameter (each)