Nexel Stem Casters Set (4) 5" Polyurethane Wheel, 2 with Brakes 1200 Lb. SPECIFICALLY DESIGNED AND MANUFACTURED BY NEXEL® FOR THEIR WIDE ASSORTMENT OF GEC™ WIRE SHELF MATERIAL HANDLING CARTS AND TRUCKS. Capacity ATTACHES TO BOTTOM OF POST.REPLACEMENT NEXEL® CASTER KIT FOR GEC™ WIRE CARTS & TRUCKS REPLACE WORN OR BROKEN CASTERS AND WHEELS WITH THESE FACTORY REPLACEMENTS.