This is a stainless steel fish bone remover (tweezers). Purpose: Used to remove the central bone when filleting fish, such as when preparing three-piece fillets. Material: 18-8 stainless steel or 18-0 stainless steel, which are highly durable and rust-resistant, are commonly used. Features: The tips are designed to interlock, allowing them to firmly grip even small bones. I used this at home, but I am listing it because I no longer need it.