Hejian Fanglei Drill Equipment Co., Ltd is one of the most professional companies that specilizes in the drill equipment. We can supply a large quantity of pdc bits, tricone bits drill pipe and drill collar(new and used), and various size is available. Besides, the goods have good quality and reasonable you are interested in drill bits, please contact me now for a long time. We are waiting for cooperating with you and your company sincerely.