2 post lift with bottom plate,manual safety lock release HY-2-40, Manual safety lock releaseLifting capacity: 4tons(9000lb) Lifting height:1900mm Lifting time: 55S Voltage220v Motor power: 2.2kw Total height: 2812mm Total width: 3419.6mm Innersize between 2post Column:2800mm Net weight: 600kgsGross weight:620kgsLoading 22pc/20'Container,44pcs/40'Container Auto lift