Maxdrill offers rock drill bits: R32 Threaded Button Bits for drifting and tunneling drilling project.

Diameter:43mm,45mm,48mm,51mm,57mm,64mm, 76mm

Skirt body: retrac and standard skirt

For more info, http://Visit-www.maxdrillrocktools.com/...

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Maxdrill R32 Threaded Button Bits for drifting and t...