... -short delivery time Product (1):we specializes in manufacturing:Tricone bits, steel tooth bit, milled tooth tricone bit, tungsten carbide insert ... , tri-cone drill bit , 3 cone bits, rotary bit, TCI tricone bit, PDC drill bit , diamond core bit, bicenter bit, single cone bit ... global wholesale supplier of new and used tricone, and PDC bits and core bits for use in the gas, oil and mining industries ...