Roller Cone BitsRoller Cone Bits is the most important drilling tools in oil and gas,Website:http://www.gaotondrilling.com, water, geothermal industry. Drill Bit is the lowest of all the drilling tools and equipment, which is connected with near-bit stabilizer.Type: Tungsten Carbide Insert (TCI) bits and Milled-tooth bitsSize: 2-7/8" ~ 36", also could produce as per your individual requirements.Formation: soft ,medium soft ,hard,medium hard,very hard formationPlease specify when ordering: Size, IADC Code, Type, Quantity, etc.IADC Code is a very important code for us to quote you as it is a three-digit application-related code, which will indicate the working environment. If you could not provided the IADC code, please advise the working condition. We will provide you a suggestion for your reference.If you have any further requirements, please feel free to contact us by [email protected]