... 5m; 3) Professional service Product Name: Pneumatic YT28 air leg rock drill Company Name: Shandong China Coal Industrial & Mining Supplies Group ... Co., Ltd.YT28 rock drill /Rock Drill /pneumatic drill /air leg rock drills 1.The rock drill is a kind of high ... stroke1365mm YT28 is a kind of high efficincy air-leg rock drill, which is mainly uesed in mine exploitation, railway, highway ...