Metal | | Adjustable Shelf: Organizer Shelf Can Adjust The Height Of Each Tier According To Your Storage Needs And The Size Of The Items You Place On It. This Flexibility Allows You To Better Utilize The Space On The Shelves By Placing Items Of Different Sizes And Shapes In A Logical Manner, Ensuring A Neat And Organized Space | | Material Upgrade: Metal Storage Rack Is Made Of High Quality Metal, Upgraded The Weight Capacity Of The Shelves, The Shelves Are Able To Hold Up To 350Lbs On Each Tier, Providing Strong Support For You To Place Your Items. The Coating Design Of The Shelves Ensures That The Storage Racks Are Rust-Resistant, Waterproof, High Temperature And Low Temperature Resistant, Which Can Be Used Stably For A Long Time In Various Environments | | Wide Application: Storage Rack Is Equipped With Rubber Feet To Protect The Floor, Enhance The Stability Of The Shelves And Prevent Sliding. This Design Allows This Storage Rack To Be Widely Used In A Variety Of Environme.