FLEX Stack Pack Storage System 3-Drawer Tool Box – FS1105, Grey / Black. NEW in box. This three-drawer toolbox features auto-locking mechanisms that securely close and prevent drawers from opening during transport while durable rust-resistant rails ensure the drawers open and close smoothly over a long life. The drawers are optimized for compact tools like impact wrenches and reciprocating saws and come with removable dividers in each drawer so you can organize a variety of hardware or supplies. An onboard security bar allows you to lock the drawers to prevent theft and stows between use.