Heavy Duty Black Steel 4-Tier Shelving Unit with Locking CastersThis Heavy Duty Black Steel 4 Tier Shelving Unit with Locking Casters is perfect for any business, home, garage, or kitchen use. With a 250 lb weight capacity per shelf on feet levelers, it can hold your large, heavy boxes, big items, and everything in between. Assembly requires no tools and uses a slip sleeve locking system allowing shelves to be adjustable in 1" increments. Heavy Duty Black Steel 4 Tier Shelving Unit with Locking Casters Black