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.By the way, we import the scraped drill bits, tricone bits.If you have the products, pls do not hesitate to contact me.