bauer coupling is made of carbon steel with hot zinc plated. size:from 2" to 8" parts:female, male, ... /Sparts: male tail, female tail, lever ring and rubber gasket size: 2", 3", 3-1/2",4",6",8" advantage: safe, fast, easy ... to, only the clients can supply the drawings or samples. hot zinc plated bauer coupling with hose tail