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

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...

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

Steel body PDC bit is made by AISI 4145H heat treatment steel manufacture, it has lower cost compare with Matrix body PDC bit.