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GREAT DRILL BITS can be customized and supply various sizes , type downhole motor according to the drilling demand.

PDC Reamer is the perfect tool for large diameter HDD bores. The size of the reamer is ranging from 12" to 50".

Tricone bit is an important tool for oil drilling.

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 ....