1.Engine:

     The engine is a hand operated,single cyliner and two stroke pertol enginewith air cooling.reflux airconversion,no contract ignition,and no floating-type carburetor.It is composed of control parts.starer parts.oil tank parts,fly wheel parts,crankshaftcase parts,magneto parts,and piston parts and cyliner parts.

2.Air compressor

      The engine piston and hammer piston are mounted separately in the upper and lower place of the cylinder.These two piston move up and down synchronously.The harmmer piston and the bigger bore of the cylinder forma compression chamber.Tt is composed of harmmer piston parts and cylinder parts .

3.Rock drill

      It is composed of hammer piston parts,rotation mechanism parts,drill shank housing parts.