T45 89mm Retrac button bits same as Atlas Copco rock drill ...
2019-6-12u2002·u200289mm T45 Retrac thread rock drill bits. Rock Drill Button Bits including Top hammer and DTH drilling tools. For the Top hammer rock drill bits, we can produce all series drill bits including taper button bis, chisel bits, cross bit, and thread drill button bits, cross bits and retrac Cross or Button Bits.
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