We are the manufacturer of drill bits in China , we can design and produce drill bits as customer request. we are the agent of tricone bits , we have built further cooperation with KINGDREAM, LILIN, CS and other big factories in China , please be assured that we can supply you the same good quality with better prices. We can also supply drag bits , drill pipe , drill collar, DTH hammer bits, fishing tools, stabilizer, casing centralizerand some other drill equipments with better prices. Now we have some new Lilin bits and Kingdream bits in store , if you have any needs about new or used PDC bits and tricone bits or any drill equipments , please don&＃039;t hesitate to contact me , thanks. I hope we can start a long term business ship here.