The RYOBI LINK Modular Storage System is revolutionizing the storage industry, enabling you to Organize, Access and Transport your life. The SlotBox Receiver keeps all organizers in one place and can be conveniently stored on a LINK Wall Rail, or brought on the go in a LINK mobile stack. When in a stack, the organizers can be accessed from the left or right sides, allowing you to reach for tools and small parts, without having to take the stack apart. Secure your organizers in the receiver with integrated lock. Expand on your SlotBox system with SlotBox Organizers, sold separately. The receiver can hold 2 Medium Organizers, 4 Low-Profile Organizers, or a combination of both to fit your project needs. Best of all, it is part of the RYOBI LINK Modular Storage System line of products that use the same locking technology to seamlessly connect your mobile and stationary storage needs. Own your space with RYOBI LINK Modular Storage System.