DTH Bit-Numa120-381

Rock drilling tools factory Bloom manufactures high quality DTH drill Bits with NUMA shank type are available in a various range of sizes and with a number of custom design features for optimum performance in a rock formation, which are designed to match all conceivable applications for water well drilling, stone quarrying, mining and construction. shank adaptor is the most important part of rock driling tools , which will decide rock drill's drilling efficiency and cost.

Rock drill bits Shank type: NUMA120; and DTH hammer bits hole diameter: 3", 4", 5", 6", 8"(85mm-350mm).

Concave Face

The all around application bit face designed specifically for medium hard and homogeneous rock formations. Good hole deviation control and good flushing capacity.

Dome/Hemispherical Buttons

Universal buttons for all rock formation, best suited to hardest and very abrasive rock formation.