... is a hand-held pneumatic drill,can drill the coal and rock and so on,which is with ... . -a hand-held pneumatic drill,can drill the coal and rock and so on,which is with light ... application: Widely used in tunnel drivage,rock engineering,mining,water conservancy project and various kinds of rockwork, as an ... In wooden box, seaworthy -According to customers' requirements water-air handheld drill for coal