QUANTUM STORAGE HD36 ONE 36″” SKATE FIT A 36″” SLIDING TRACK SKATE TO ANY WIRE SHELVING UNIT TO TURN IT INTO A MOBILE STORAGE SYSTEM FOR MAXIMUM EFFICIENCY. THE PATENTED DESIGN ALLOWS FOR QUICK AND EASY INSTALLATION. BEARINGS ARE LOCATED UNDER EACH POST AREA FOR A LOAD CAPACITY OF UP THE 1500 LBS. PER SHELVING UNIT.