5 inch dth drilling hammer

low pressure high 76mm pressure dth hammer button drill bit for hard rock 3 Inch High Air Pressure 150mm 200mm Blast Hole Drilling Bit DTH Hammer Button Bits For Core Drilling Rig The DTH Bits for Hammers are manufactured according to the best quality standards using high quality Steel grade in order to guarantee maximum performance. Our Bits are used for Constructio, Water well drilling, Geothermal Drilling, Micropiles, Quarry and Mining field. Concave Face DTH Bit For