Whitmor's Supreme Commercial Carts feature a durable chromed steel frame and extra strong wire shelves. Two of the four heavy duty wheels feature a locking option for solid shelf unit placement. They are easy to assemble with no tools needed and as a part of Whitmor's Supreme Chrome Collection come with a 10 year warranty. These carts are perfect for attic, garage, kitchen, office, bathroom, laundry room or anywhere you may need extra storage with a portability feature. The 6057-4308-BB Supreme Commercial 3 Tier Baskets Cart features 2 sturdy wire basket shelves , a top shelf and a chromed steel handle to aid in portability.