... hand-hold rock drill, hand hammer drilllow weight,reasonable structure,handy use and little air consumption. 6 hand-hold rock drill ... ,handy use and little air consumption. Hand-hold rock drill, specificationsModelWeightkgLengthmmCyinder Dia.×StrokemmWorking pressureMPaImpact energyJImpact ferquencyHZAir comsumptionI/ ... ≤47 hand held drill,hand drill,jack hammer drill ,hand hold rock drill Y018