1/2″, brass, repair compression coupling, has a brass body & brass nuts, rubber gaskets, rated 125 psi at up to 210 degrees fahrenheit, fits both iron pipe & copper tube as listed & is for use in piping or repair of galvanized or copper pipe, pipe must be restrained after installation, lead free, no. 160-304nl: 1″ copper tube size, material: brass, maximum temperature: 210 degrees fahrenheit, pressure rating: 125 psi.