Trailer parts 3.5" King pin D-Value: 240 Thickness: 10mm/12mm/16mm/20mm ... will be finished in June, 2012 Trailer parts king pin series produced by our company QINGDAO JIN LI BO ... TRADE CO., LTD., has reasonable structure,good braking quality,high-intensity,big rigidity,long life,as well as strong ... :2000TS16949 will be finished in June, 2012 Our King Pin series are popular sold to many countries in USA, ...