... pdc bit Specification: φ50-59, φ65, φ73-75, φ89,φ94, φ108, φ115, φ120, φ133, φ146, φ153 OD type core bit, non-coring drilling bit ,anchor bit ... ,coal bit, rock bit cutter pdc ,diamond or alloy PDC bit uses PDC as main cutting components, with ...