Free: 1-800-861-1129 Drilling StandardsReference GuideImperial UnitsMetric = Core Diameter, = Outside Diameter, = Inside Diameter, *with coupling, **either/orDrilling Standards Reference GuideBits Reaming ftkg/10ftlbs/3mkg/3 * * * * ** **
Imperial Units Metric Units C.D. = Core Diameter, O.D. = Outside Diameter, I.D. = Inside Diameter, *with coupling, **either/or Drilling Standards Reference Guide
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1 Free: 1-800-861-1129 Drilling StandardsReference GuideImperial UnitsMetric = Core Diameter, = Outside Diameter, = Inside Diameter, *with coupling, **either/orDrilling Standards Reference GuideBits Reaming ftkg/10ftlbs/3mkg/3 * * * * ** **