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Diamond Coring Drill Tool Size and Set

Common specifications of diamond coring drill bits (inch): 2 4 5 6 7 8 10 12 inches, ฯลฯ. Common specifications of diamond coring drill bits (มม.): 110มม., 110มม., 117มม., 120มม., 125มม., 127มม., 130มม., 150มม., 160มม., 180มม., 200มม., ฯลฯ.