... professional electrice jack tongue jack for RV,thailer ,special car,the lifting power is 1500KG,have the remote controlGo This trailer jack is sold ... : 450mm4.effective control radius: 15m5.can use one single jack or use four jacks together to lift the vehicle6.with ... 685 mm x182 mm x175 mm12. appro. Shipping weight: 12KG trailer jack,trailer support,tube jack electric trailer tongue jack HH-3002