gas rock drill YN30/YN30E/YN30A: it can be handled horizontally,vertically downward,or upward ... at an angle below 45 degree Gas rock drill YN30/YN30E/YN30A: Technical specifications Weight of main engine30 kgOverall dimensions(L ... oil (in volumes)12:1 Gas powered rock drill YN30/YN30E/YN30A