Wholesale Customized TCI Tricone Drill Bit For Hard Rock Mining Machinery Roller Cone Drilling Machines The three cone drill bit is the most widely used core rock breaking tool in oil and gas drilling wells. It relies on three toothed conical cones to roll at the bottom of the well, crushing rocks through impact, crushing, and shearing, and is suitable for various formations ranging from soft to hard. Under the action of drilling pressure and rotation, the three cones