Great Rock Reamer Hole Opener

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...

Raise Boring Cutters OverviewThe raise boring cutters is mainly used for the construction of vertical shafts, ventilation shafts inclined shafts, pressure regulating shafts and escape shafts , and it...

GREAT customized made Diamond core bits ,which including Matrix body and Steel body.

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