trailer brake coupling

Trailer brake coupling 1. One-touch tube fittings are used in pneumatic piping. 2. The tube fittings come in a wide variety of models to meet all your needs in pneumatic piping. 3. Even after installation, the direction of the tube can be changed freely. 4. Nickel-pated metal body ensures anti-corrosion and anti-contamination. 5. All R and NPT threads are pre-coated sealant. 6. It is with black rubber seal in it. to reinforce the safety of the air brake system.It is easy to use and fix. 7. Used to connect the air brake system of the heavy truck,semi-trailer,tractor and so on. 8. A manufacturer specilized in producing trailer brake, coupling with high quality and favorableprice at home and abroad,with good reputation and prompt delivery. 9. According to you samples or pictures and drawings,all size is ok. 10. Address:NO.18.Dajiang Road.Diankou Town,Zhuji City,Zhejiang Province,China.