Mix, match, and expand—Seville’s modular cabinets and products grow with your needs, delivering lasting value for every project. Crafted from commercial industrial grade steel Shelf is conveniently mobile using the set of four 3" wheels (2 lock in place) Unique bin tilt locking design, keeping bins and contents in place 22 polypropylene bins included (12 medium, 6 large, 4 XL) Easy assembly, no tools needed