We are supplier of TCI tricone bits,steel tooth bits and pdc bits Material: Alloy steel Certificated by API& ... bits,tricone bits, diamond bits,PDC bits,TCI bits, steel tooth bits, milled tooth bits, rock bits, oilfield bits and so on .Specification ... .Model114,117,127,437,517,617,637 TypeTricone bits, Steel tooth bits, PDC bits Applicable water well, oil field, construction, geothermal ...