We're the MANUFACTURER of high quality slack adjuster for truck and trailer with competitive price! we have variety kind manual and automatic slack adjuster such as : Trailer, MERCEDES -BENZ,BPW, SCANIA,VOLVO,TATA,MAN,KAMAZ,MAZ,STR... 
We have many years engaged manufacture and design in this field, my product have ISO 9001-2008 Certification .let me be your reliable, high capacity and good service product line.