Open Stone Drill Head

We can produce the variety of drill tools, details as below:1. Type : Single bottom of drilling bucket; Double bottom of drilling bucket; Rock core barrels drilling bucket; Double spiral drilling auger.2.Uses: Bottom of drilling bucket can be with single door or double door. It is used for drilling soil, rock layer, claypan and sandy gravel.3. Size: All drill bits have different sizes, minimum diameter is 600mm, the maximum diameter is 2500mm, thickness from 16mm to 20mm.4.