Made from strong powder-coated metal tube and fine plastic connector, this height adjustable 5 shelf storage rack on 4 Wheel is durable,stable and sturdiness can well gurantee that it will not wobble after putting stuff on it. 5-tier Heavy Duty Standing Shelving unit is extremely useful in organizing stuff ,especially great for any place where has limited room while requires large storage space,such as batroom,doorway, entryway,garage, kitchen,pantry,laundry,office or closet. This powder coated Metal Organizer Wire Rack does not rust or corrode with normal coating makes it looks much nicer and less the bottom feet have plastic cover so as not to scratch the hardwood floors.