The STANLEY FATMAX 4-in-1 Mobile Work Station is rugged and multi-tiered. It features 4 convenient storage solutions to accommodate a multitude of tools and parts - a tool box, part bin, portable tray, and oversized lower bin for larger items. The work station features a patented, tiered cantilever multilevel rolling system that allows for easy access to all 4 storage areas at the same time. It is made using a durable structural foam construction with extra-large, heavy-duty metal latches with pad lockable eyelets and extra-heavy-duty, rubber-coated 7-in. wheels for maximum stability. With this handy, lockable work station, you can stay organized and bring all the supplies you need to your jobsite in 1 easy trip.