... rock bits,tricone bits, diamond bits,PDC bits,TCI bits, steel tooth bits, milled tooth bits, rock bits, oilfield bits and ... support.Model114,117,127,437,517,617,637 TypeTricone bits, Steel tooth bits, PDC bits Applicable water well, oil field, construction ... , hard formation Bearing rubber seal or metal seal Packing wooden box, steel box, or as your requirements Payment Term T/T or L ...