IP65-Rated Modular Tool Storage — The Ultimate Stackable System DEWALT's ToughSystem 2.0 is the most comprehensive modular tool storage system on the market. IP65-rated against water and dust, the large tool box stacks and auto-locks with other ToughSystem 2.0 units, mounts on rolling carts and wall racking systems, and keeps your tools protected on the job site or organized in the shop. Rating: IP65 — fully sealed against water and dust ingress Latch System: Auto-connect latches — boxes snap and lock together automatically when stacked Compatibility: All ToughSystem 2.0 boxes, organizers, carts, and wall racking systems Interior: Removable tray organizer included for small parts Handle: Ergonomic carry handle for single-unit transport Material: Structural foam body with steel latches Warranty: Lifetime limited warranty on structural components