1.electric jack 2.Voltage:DC12V 3.Max current:15A 4.load ... the jacks.(3) "New" gear, screw - using high quality materials, after high-frequency heat treatment, ... shape. Electric jack slab and under arms over thick, using reinforced optimization strong design, make jack lifting ... lifting, safe and reliable.(4) Environmental clean: using screw gear transmission, discard the traditional hydraulic design, ...