4 Layer Foldable Trolley Rack, Kitchen Storage Rack with WheelsThe four layer metal storage rack is made of carbon steel and also includes a small spanner and four caster wheels, of which two are lockable. The wheels are composed of high quality PP material for durability. About This Item STURDY STRUCTURE: carbon steel material, sturdy and durable, not easy to deform, bearing capacity up to 200kg. MOVABLE AND FIXED: There are 4 universal wheels at the bottom, which can rotate 360 degrees, and can be fixed at any