The full face diving 2nd stage regulator made from copper with plating, ensuring resistance and long terms . Its quick connecting and quick disconnect selves locking mechanism allows for easy and secure attachment during scubas diving and underwater activity. This diving regulator adapter is light weight and selves locking quick releases systems ensures a tight seal, accidental disconnection while diving. The precisions engineered quick connecting systems enhances and ease of use during deeply underwater diving and snorkeling. Suitable for most full face diving , this 2nd stage regulator ensures seamless integration with your existing equipment.