8 1/2" Coal Mining Water Well Drilling Bits 4 Wings Drag Bit 203mm 8'' x 3 1/2'' API REG

LANGFANG UQIER DRLL BIT CO.,LTD.as a leading manufacturer of tricone bit s and PDC bits, our products are made strictly complying with API specifications and ISO9001 LANGFANG UQIER DRLL BIT CO.,LTD.was established in 1990. We have kept our clients ahead of schedule and under budget by providing the highest quality tools at the best possible prices. Our products are sold in more than 30 countries and serve the oil and gas, well and other industries.Construction, Mining, Horizontal Directional Drilling (HDD),Geothermal and Environmental. Our experienced staff is here to asslst you with everything from choosing the right bit to shipping around the global. Our goal is to provide our customers with the best quality tools, accessories and service in the industry. We are supported by many years of experience, trained professionals and a full machine shop. Reduce the cost .Speed the drilling ,Guarantee the safety is always our aim.