The upper part is connected to a drill through Rod and the lower part is a cylindrical structure to connect Bit.
It penetrates with pressured air, and it digs through a rock using a Tungsten Insert of Bit by hitting energy as like as hammering which transferred from piston movement.


It is used for fundamental anchoring, boring the holes for H-beams.
Steel piles, soil injection in the construction for subway, bridge, and buildings.
More generally, it is used in boring for underground water and hot spring development.
In many areas, Hammer and Bit may be used for using the geothermal energy.
Therefore it is a product can be used in various fields of agriculture, irrigation, industry, leisure, geological survey, and mining.