... structure,handy use and little air consumption. 6 hand-hold rock drill is a tool for the secondary blasting in quarry and ... ,reasonable structure,handy use and little air consumption. Hand-hold rock drill, specificationsModelWeightkgLengthmmCyinder Dia.×StrokemmWorking pressureMPaImpact energyJImpact ferquencyHZAir comsumptionI/sYO151555058×450.4 ...