bauer coupling is made of carbon steel with hot zinc plated. size:from 2" to 8" parts:female, male, lever ring ... female tail, lever ring and rubber gasket size: 2", 3", 3-1/2",4",6",8" advantage: safe, fast, easy, ... , but the clients shouldpay for the express fees.2.Do you have the MQO?Because we have many ... the clients can supply the drawings or samples. hot zinc plated bauer coupling with hose tail