Open Range Ranch Ropes: Ranch Rope. Yeehaw cowboy! Created with the best quality raw materials on the market, Open Range Ranch Ropes are twisted here in Idaho on long rope machines. They are then waxed, tied, and coiled by our experienced rope makers, and ready to use then they arrive at your ranch. Our original series ropes are a 65/35 nylon poly blend. They come in a 5/16" or a 3/8� Super Scant and are 3 strand. ORG3516Open Range