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. Length Extended in. 21, Crank Type Top wind, Jack Type Round, Length of Travel in. 10, Length Retracted in. 11, Lift Capacity lbs. 2,000, Mount Type Weld-on, Ground Support 7in.L x 4in.W plate.