Great Rock Reamer Hole Opener

Steel tooth drills are suitable for extremely soft formations with low compressive strength and high drillability such as clay, mudstone, chalk, etc..

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

Tricone bit is an important tool for oil drilling.

PDC Hole Openers, are used to enlarge the pilot hole in Horizontal Directional Drilling(HDD).Widely used in construction, bridge, highway and railway construction.