Stanley FATMAX 22 in. 4-in-1 Cantilever Tool Box Mobile Work Center Storage New. The FATMAX 22 in. Structural Foam Roll Workshop offers versatility to professionals who need to stay organized while transporting tools and materials to and from jobsites. Equipped with a tool box, tray, organizer and large bottom bin, the workshop offers versatile storage options. Its heavy-duty rubber-coated 7 in. Wheels deliver great stability. Structural foam workshop is durable. 4 storage solutions, including a tool box, part bins, a portable tray and an oversized lower bin for larger items. Tiered cantilever multi-level rolling system for easy access to 4 storage areas at the same time. Telescopic handle for easy maneuvering. Heavy-duty rubber-coated 7 in. Maximum Handle Length in. Holding Capacity cu in. Tool Storage Product Type.