... ,reasonable structure,handy use and little air consumption. hand hammer drill, rock drill,6 hand-hold rock drill is a tool for the secondary blasting in quarry ... low weight,reasonable structure,handy use and little air consumption. Hand-hold rock drill, specificationsModelWeightkgLengthmmCyinder Dia.×StrokemmWorking pressureMPaImpact energyJImpact ferquencyHZAir comsumptionI/sYO151555058×450 ...