Wireline Drill Rods Bits, Impregnated 4 Inch Diamond Core Drill Bit Q series core bits Size O.D I.D Availability mm mm Imp. S.S T.C. PDC TSP E.P. AQ 47.75/47.50 27.10/26.85 √ √ √ √ √ √ BQ 59.69/59.44 ...
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