... handy use and little air consumption. 6 hand-hold rock drill is a tool for the secondary blasting in quarry ... structure,handy use and little air consumption. Hand-hold rock drill, specificationsModelWeightkgLengthmmCyinder Dia.×StrokemmWorking pressureMPaImpact energyJImpact ferquencyHZAir comsumptionI/sYO151555058×450 ... ×700.4-0.63≥30≥23≤47 unmounted rock drill,hand drill,jack hammer drill Y26