This is an E.R. Wagner Thermoplastic Polymer Caster Wheel which is a replacement part for the LG1100 and LG1200 Lifeguard Platform Chairs produced by Poolweb.com. The wheel is 5 inches in diameter and has a 300 pound load capacity.
This caster wheel is used only on the LG1100 and LG1200 lifeguard platform chairs. The platforms have two wheels in the back for moving.