Superior DHD/SD Deviation Control DTH Drill Bits For Engineering Drilling Blasting

SD6-191MM (=7.5"), Concave face, Rock Drill Tool DTH Button Bits For Engineering Drilling Blasting Hole DTH bits with for water well industries, mining and construction. Shank types: SD4, SD5, SD6, SD8. The all around application bit face designed specifically for medium hard and homogeneous rock formations. Good hole deviation control and good flushing capacity. Universal buttons for all rock formation, best suited to hardest and very abrasive rock formation. Concave Face