Material: stainless steel, not easy to rust, high temperature resistance, durable. features: sturdy and durable, not easy to rust, not easy to fade, strong load capacity, easy to clean, thick material, safe and healthy. function:a variety of kitchen items can be placed, saving space,easy to install.foldable, detachable design: the frame u-shaped structure is very stable. the tool holder is mounted behind the shelf to save space. the chopping block is 6.5cm wide and can hold two chopping boards. raise the guardrail to prevent items from falling. easy to assemble, over-the-sink design would save much more space in kitchen. please measure you sink size before order and make sure it fit your sink.