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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.