Description
Esta broca sirve para roca media, se recomiendan las brocas medias si se desconoce el tipo de roca a encontrar, la dureza de esta matriz es muy ceracana a la de la serie 6; gabbro, diabase, dolerita, mica esquistia, siststone, granito.
This drill bit is suitable for medium rock. Medium bits are recommended when the type of rock is unknown, and the hardness of this matrix is very close to that of series 6; gabbro, diabase, dolerite, mica schist, siltstone, granite.