... 3 Air consumption: 5 m3 YT28 Hand Hold Jack Leg Rock DrillFunction:1, drilling downward2, blast-holes in medium ... a hardness of f=8~18YT28 Hand Hold Air Leg Rock Drill is an ideal tool for rock drilling ... in large mines.SPECIFICATIONSYT28 Hand Hold Jack Leg Air Rock Drill Air-leg rock drillsTypeYT28 Weight(kg)26 Air consumption( ... length (mm)1365 965 YT28 Hand Hold Jack Leg Air Rock Drill Picture