Silvestri Fence uses a design developed in New Zealand. This high-tensile fencing system utilizes fluent 12-1/2 gauge wire with a yield strength of 200,000 pounds per square inch, or a toughness of 1,600 pounds per wire. Conventional fencing wire conventionally has a yield strength of less than 60,000 pounds per square inch. More than half our strength. Fixed knot fences utilize solid vertical stay wires, which increase the vertical strength of the fence and allow for further post spacing. Our fixed knot is a separate piece of wire tightly coiled around the line wire and stay wire providing the highest strength and locking both the horizontal and vertical wires in place.