Great Screw Introduction

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

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

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

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...