• 4-tier design keeps a variety of items organized• Foldable metal frame allows for easy assembly• Space-saving storage shelf makes full use of space• Powder-coated metal tubes account for reliable structure• Reinforced back bracket for enhanced support • With anti-toppling device to avoid wobbling and enhance stability• Equipped with 4 smooth rolling casters for easy movement • 2 casters with lockable design keep the storage rack in place• Slot design for easy assembly and saving much effort• Used as a bookshelf, plant stand, or tool storage rack, etc