Mix and match to create your ideal storage system. Interlocking design lets you stack and connect units together to form a custom modular system. Great for office supplies, craft storage, sewing materials, school items, nails, nuts, bolts and more! Transparent bins tilt out and stay open while in use. Bins can be easily removed from locking mechanism for cleaning and refilling. Can be wall mounted or used on countertop. Identification labels and mounting hardware included.