12V DC 1 Ton Electric Hydraulic Floor Jack Set For Car Use (6.1-17.1 inch, Black) Roadside emergency kit including Combo 2 in 1 Electric hydraulic jack with Inflatable pump inside, Electric impact wrench, Sleeves, Glove, Battery clampand Storage Case Jack rated capacity: 1 Ton (2200lbs) with lift range 6.1 inch to 17.3 inch 340NM electric impact wrench with 4 size of sleeves is able to match most cars Work with 12V vehicle power outlet, and operate easily just by 2 switch Built-in safety device prevent jack from falling and keep current height even out of power Check whether turning on the auto power The pilot lamp for the cigarette lighter plug is on or not ,if it is destroyed,please replace it,the try again Whether the plug for the power cable of jack is loosen with the jack or falling off Confirm whether starting the motor Check the direction switch for up/down Check whether the lowest temperature is within the rang of suitable temperature for this product,if not please preheating the jack ,macking the hydraulic oil thaw Not using for long time maybe cause the oil is not smooth,please first up switch for starting one minute,the press down switch