You may also like. 26-inch 4 Drawer Tool Chest Organizer Cabinet Lockable With Keys Workshop Black. HART STACK System, Mobile Tool Storage and Organization, Fits Modular Storage System. Pack, Stack and Go! If you want all your Tools, DIY or hobby kits and accessories in one place, the Hart Stack system is a great option for you. Offering the ultimate in-cross system connectivity, this lockable system includes 3 tool storage essentials: a mobile cart, toolbox and organizer. The lower cart with telescopic handle and 7 inch wheels is great to move your tools from place to place, the middle toolbox offers versatile storage options, and the upper organizer keeps smaller items in a perfect order. Combine all storage units with a very little effort into one system or customize according to your requirements – the choice is yours. Need the cart plus organizer today? Need all your gear at once, just pack, stack and you’re ready to take on your next project! The Hart Stack System has inter-changeable trays that can be used across the cart and toolbox. Lower cart dimensions are 21” wide by 16.2″ deep by 22.2″ high. The middle box in this stack is 21” wide by 13.6” deep by 10.2 high. The upper organizer box is 21” wide by 13.6” deep by 4.5” high. HART Stack System, Mobile Tool Storage and Organization, Black Features. The ultimate in-cross system connectivity for DIYers, crafters and hobbyists. Mobile System with deep storage compartments. Side grips for carrying the product. Mid-sized toolbox with removable tray also fits to the cart. Lockable (Lock not included). Multiple sized removable bins. Transparent polycarbonate lid on organizer.