*One of the more popular diameters used by many natural horse trainers is 1/4 inch stiff Rope which holds it's shape and form. *Rope Construction: Polyester Cover/Parallel Polyester core When the core of the rope consists of one or more un-braided fibers running parallel to a braided “cover” the rope can be called a braided cover parallel core rope or cord. Halter cord uses this construction. Fibers used in the core of this rope are premium polyester fibers. Parallel core ropes are not considered “splicable.” Previously called 8TF. *Due to polyester fibers high strength, low stretch, excellent sunlight resistance, and excellent abrasion resistance properties, polyester is a preferred fiber for many natural horse trainers. *Application: 2 and 4 Knot Horse Rope Halters General Purpose Rope