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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 Starry Sky Roller BitGREAT has customized manufacture 90 ° U-shaped Roller Bit, 120 ° U-shaped Roller Bit and Starry Sky Roller Bit.The Roller bit mainly used for Rock reamer (Hole opener) ...

Normally drag bits are 3 wings, but we can make 4 or 5 wings following your drawings or samples.

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