January/February 2015. From International Construction magazine.

…Meanwhile Rockmore International has launched its T-series down-the-hole (DTH) hammer line, the first model being the ROK 600T. The new T-series uses drill bits with standard shank connections that no longer require plastic parts commonly known as Blow Tubes or Foot Valves. Rockmore said the elimination of this part offers technical and economic advantages, with better reliability without any compromise on performance.

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