3 blade Fixed cutter bits and 5 blade Matrix body PDC bits

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

This type of Bi-center bit mainly used for medium to medium hard compressive and abrasive formation.

Steel tooth drills are suitable for extremely soft formations with low compressive strength and high drillability such as clay, mudstone, chalk, etc..

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 ....