Hejian Yinhai Rock Bits Manufacture Co., Ltd established at 2008 is located in Hejian Ciy, Hebei Provice, China. YINHAI UAE warehouse is located in Al Aweer Ras Alkhor Industrial Area, Dubai for middle east market. We are the real manufacturer of1. tricone bits, PDC bits, downhole reamers for oil well drilling and water well drilling;2. pilot bits/single cutters and reammers for Horizontal Drilling projects;3.Singles cutters for core barrel and auger bits for piling foundation.We have 13-years-experience of designing-producing rock drilling tools, including both regular type and customization. We can also be your best OEM and ODM manufacturer.BEST PRICE! BEST QUALITY!BEST SERVICE!