Brass coupling 1. Size:L1/2M*1/2M,L3/4M*3/4M ... .S 3. Certificate: CE,ISO9001:2000,ISO14001:2004 ZL-9913 Brass coupling M/M • Color: Original color or Nickel/Chromel plated• Material ... : brass,stainless steel• Size:L1/2M*1/2M,L3/4M*3/ ... you Testing Certificate and Mill Certificate if required. ZL-9913 Brass coupling