The PACKOUT 4-Drawer Tool Box has a 50lbs weight capacity and a locking security bar that allows you to padlock the drawers closed, keeping them securely shut during transport. As part of PACKOUT Modular Storage, the 4-Drawer Tool Box allows you to customize your storage system for easy transportation and organization of tools and accessories. This portable tool box with drawers is constructed with impact-resistant polymers, all-metal ball-bearing slides, and metal-reinforced corners for ultimate jobsite durability. The 4-Drawer Tool Box also allows you to customize your drawer layout with Quick-Adjust Dividers (includes 4 set of dividers). The PACKOUT Modular Storage System is the industry's most versatile and durable storage system.