Organize your small parts and tools easily with this 20 bin rail mount stackable storage organizer from Storehouse. Each bin is made of durable polypropylene. The bins are stackable and can be mounted on a rail for easy access and storage. With a container size of 5 in. x 4 in. x 3 in., this entire organizer is perfect for storing small items like screws, nails, nuts, and bolts, or if you are a Jewelry maker, it will store so many of those small beads and miscellaneous finding. This is a versitile organizing system that will definately find multiple uses from the craft room, a workshop, to the garage. It is designed to be used in a variety of settings including an industrial workplace. The organizer is in an open box, brand new and unused. Get organized today with this versatile and durable storage solution!