Product Introduction YN27C Rock Drillis a very efficient machine,composed of gasoline engine, Air pump, rock drill. It adapt to these outside situations without water and electronic power. Meanwhile it is a hand- held drill, during operation,rock power is blown away by the compressed air produced by the machine itself. .Its suited to work on high mountains, plains, hot and cold area with no power and no water supply and air compressing equipments, and especially suits the projects that the machine has to be carried at any time and in any area. Main Characteristics 1. Easy to operate, just turn the handle to make it work. 2.Time and labor saving, Drilling fast and high efficiency. 3. First-class level Drilling Tools, suitable for site without power or pressure equipment, it has wide adaptability for high mountain and plain, extreme temperature (40 to -40). 4.Used to drill vertical downward hole(max depth 6m) and and <45° upward hole. 5.Light Drilling Tools, only 27kgs, easy to carry.