Ultra-Tow Top-Wind Round Swivel Jack rotates 360 and supports 2000 lbs. 10in. travel range between 11in. and 21in.H. Top wind for easy use. 7in.L x 4in.W zinc-plated ground support plate. Jack Type Round, Length of Travel in. 10, Length Extended in. 21, Length Retracted in. 11, Crank Type Top wind, Ground Support 7in.L x 4in.W plate, Lift Capacity lbs. 2,000, Mount Type Weld-on.