bauer coupling is made of carbon steel with hot zinc plated. size:from 2" to 8" parts:female, male, lever ring ... : male tail, female tail, lever ring and rubber gasket size: 2", 3", 3-1/2",4",6",8" advantage ... :30-45days(trial or urgent order can be discussed with each other) payment:L/C or T/T package ... only the clients can supply the drawings or samples. hot zinc plated bauer coupling with hose tail