Rolling cutter-Why is it called a drilling tool？

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.

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

Overview Roller bitGREAT has customized manufacture several types of roller bit . It is including 90 ° U-shaped Roller Bit, 120 ° U-shaped Roller Bit and Starry Sky Roller Bit.The 90 ° U-shaped Rol...