ZQ-20/1.8 Pneumatic Coal Borerapplying:Yong dong company exports ZQS - 20/1.8 pneumatic hand-held drill,Website:http://www.nbydtools.com, select material is excellent, the craft is advanced, microcomputer automatic detection, to ensure the product high strength, high wear resistance, high quality. The major parts of the pneumatic hammer and machine body are "YD 'tag, beware of counterfeit. This product is widely used in coal mine and other mines and construction projects, the drilling of coal seam and soft rock strata. Wet and dry drilling drilling this pneumatic hammer can be used.technical data: Depth of borer/Diameter: Φ35-Φ42mm Air pressure: 0.50Mpa Rotate speed without load: 1800r/min Rotate speed with load: 900r/min Air consumption with load: 46L/S Hose size: Φ19mm Weight: 8kg It is used our pressure: 0.50Mpa