Big Red portable stackable rolling upright trolley tool box with multiple storage compartment drawers. Constructed with steel and polypropylene, a thermoplastic polymer, provides durable and stable platform. Measure 20.5" L x 12.6" W x 28.4" H. The stackable upright trolley tool box is composed of 3 separate parts. The top is a tool box with an aluminum handle and a large, removable storage tray and has a metal latch closure. The middle has 2 slide out drawers that have ball bearings for smooth operation. The bottom has a tilt drawer storage cabinet with the back housing the 2 wheels and the collapsible, telescopic handle with a comfort grip. Each section can be separated or connected depending on your tool storage needs. If you have any questions,please contact us.