Rolling cutter-Why is it called a drilling tool？

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

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

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

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 ....