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Raise Boring Cutters OverviewThe raise boring cutters is mainly used for the construction of vertical shafts, ventilation shafts inclined shafts, pressure regulating shafts and escape shafts , and it...

Overview 120 ° U-shaped Roller bitGREAT has customized manufacture several types of roller bit . The traditional roller bit was cut by tricone bit . So it is including No.1 ,No.2, No.3 Cone cutters ....

Hybrid drill bit conventional PDC and roller-cone bits. It is saving cost, Improves Drilling Efficiency.

This is a 7 blade Matrix body PDC bit , with Stinger cutters back row, used for very abrasive formation.