Metal Grip Clip: Good grip and can hold anything, and a hole to be hanging up Stainless Steel. stainless steel, Capacity: Ideal for holding papers, documents, , receipts or other papers. Also can be use to sealing milk powder, salt, oatmeal, potato chips . Suitable for: Widely used for files organization and home kitchen food storage Service Garantee: Any problem about our product or services, please leave message to us