This 3-tier storage bin rack features a total of 15 storage bins. Bins in each tier are classified by their own colors, which are yellow, dark blue, and red. All bins is attached to a black panel and can be easily repositioned or detached as desire. It is designed for storing small to medium sized parts and tools such as wrenches, screwdrivers, tape measures, nuts, screws, bolts, and more. The rack allows you to maximize your storage space in various applications such as technical works, vehicle maintenances, warehouse storage management, or any DIYs.