Rolling Tool Storage Box Workshop Tower Auto Lock Stackable Wheels Connect New. Store all of your go-to tools in 1 convenient place with the Stanley Modular Rolling Tool Box. This 3-in-1 portable workshop solution includes a deep, extra-large bin for safe and convenient storage of power tools and hardware, a medium-sized tool box with removable tote tray ideal for storing hand tools, and a shallow tool box for small parts and accessories. The auto-lock front stacking latch lets you quickly connect and release each tool box with 1 hand. Move this tower around your job site with ease using the heavy-duty wheels and wide telescopic handle. 1-handed connect and release: quick-release stacking latch. Keep tools safe: slide and lock mechanism. Stands up to daily use: durable front metal wire latches. Highly portable: comfortable 13 in. W telescopic handle and 7 in. Large internal capacity: stores an extensive number and variety of tools, and includes an inner removable tray. Quality construction with 99 lbs.