High-quality Drill Bits from China

GREAT DRILL customized Rock reamers size from 10'' to 72''.

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 ....

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

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