1)Mechanical drive, hydraulic vibration.hydraulic steering 2)Two steel drums 3)Compacting force up to be 4T This roller is suitable for sidewalk, countryside road, parking ground, courtyard and so on.The main technical data is showed as below:Operating weight:2TDiameter of vibrating drum:650mmRolling width: 850mmStatic linear pressure: 140N/cmCentrifugal force:20KNVibration frequency: ...