Product details:

New third hook allows for unlimited amount of stretching, Makes fence repairs easier, Ideal for quick tightening, For high tensile, barbed, and smooth wire, HIRED HAND fence stretcher with third hook allows an infinite length of wire to be stretched. When the ratcheting traveler hook is released in order to get another bite, the extra stationary hook holds the wire tight. U.S. Design Pat. D457,413 S U.S. Pat. 6,105,937, CDN. Pat. 2,224,030.