Hand-held Pneumatic Drill rigFeatures:safety explosion-proof,Website: ,high torque,high speed ,light weight,small size ,high efficiency,simple structure,easy maintenance ,ETC.,increase the stability of the drilling rig,improve drilling efficiency.Application:it is suitable for the exploration of the geological structure of coal seam,the drainage ,drainage gas,coal seam water injection,unloading pressure hole,tunnel through the lead hole,the roadway bole supporting hole and other special purpose.