Hebei Zhankui Drill Equipment Co., Ltd. specializes in drill bits, drill pipe, Mud pump and stabilizers for water well, oil field, construction, geothermal, directional boring, and underground foundation work all over the world. Our purpose is to sell the best quality products at the lowest possible price. We are a professional supplier of new and used(rebuilt) drill bits used for oil filed, waterwell. Including tricone bits, PDC bits and drill pipe. Various of model and dimension available. Good condition and reasonable price. If you find any chance to work together with us, please do not hesitate to contact me.