1,Best Quality and Competitive Price 2,Super model ORB-YT27 3,Big drilling power 4,Durable ,use ... YT27 Type rock drill is a kind of high efficiency air leg rock drill machine. It's mainly used for blasting ... defense project facility. It's matched with FT160A or FT160B air leg and FY250 oil feeder as usual, which is suitable ... orientations, also can be used in the trolley without air leg to be feed.