https://www.accesscasters.com/5arppb-polymer-body-post-stem-brake-caster-for-wire-shelving-units.aspx
5ARPPB Polymer Body Post Stem Brake Caster for Wire Shelving Units like MetroMax IQ 5PCBX
5" Metro style Shelving Caster with Polymer Body with total lock brake. Poly wheel's load capacity is 300 lbs. Stem is .864 x 2 3/16. Replace Metro 5PCB,...