Klein storage boxes are offered with a choice of compartment sizes and arrangements. Scoop-bottom design for easy parts removal and cleaning. Each box has a carrying handle- positive pull-down locking catch. Fits four-drawer extra-large slide rack Cat. No. 54477. Box compartments feature high-impact styrene construction. Full-length piano hinged covers are designed to stay open for ease of access. Boxes have a heavy- metallic-gray baked-enamel finish. Boxes feature strong- rigid- heavy-duty welded construction.