Introducing Powerbit for ST58 and ST68 threads | Epiroc
2017-12-20 · The bit shape is optimised. The bit body steel is harder and stronger. And the patented Enduro Extra button surface treatment technology and Trubbnos button shape, are developed for outstanding strength and wear resistance. On top of that, the ST thread and Powerbit ST58 and ST68 give you all the characteristics you need for long and straight ...
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