T51 Retrac Drop Center Ballistic button drill bit 64mm ...
T51 Retrac Drop Center Ballistic button drill bit 64mm 76mm 89mm 102mm Thread Button bit is well known for its high wear resistance on medium-hard to hard abrasive rock formations (between 200 Mpa to 260 Mpa compressive strength). Featuring spherical tungsten carbide inserts that is known to have strong configuration against carbide fracture.
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