Fitting Compartment Boxes and Easy Glide Slide Racks; Slide Racks are designed to accommodate these Large and Small Scoop Compartment Fittings Boxes and create convenient, compact storage systems for the shop and the Service Van. The "Fittings Boxes" can be removed and transported to the job site.Rugged plastic inserts with smooth scoop bottoms fit neatly into the steel outer shell boxes. Optional bases raise racks off the floor.