Air-leg Rock Drill yt27,yt24,yt28: pneumatic breaker tools,mining tools,rock tools,rock drill,leg drill,atlas copco,drifters Air-leg Rock Drills yt27,yt24,yt28 application:YT27/YT24/YT28 Air-leg Rock Drills ... most fit for drilling horizontal and inclined blastholes in medium-hard and hard rock with a hardness ...