R25 R28 drill bits and rodsR3212 bits and rods
2021-4-26 · 6).Male/Female Steel: MF Rod or MF Steel, short for Male/Female Steel or Male/Female Rod. Replacing couplings and include the female part of the threaded connection as an integral part of the drill steel. MF Rod ensure more rigid connections and is easier to handle. Otherwise, the service life is longer than with separate coupling ...
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