Fixed Knot XtremeHigh tensile Fixed Knot XTREME fences by STAY TUFF are excellent for livestock control. They outperform conventional barbed wire and hinged knot fences on every level with superior flexibility, durability, and longevity. Even more important, our fencing lasts significantly longer than alternatives, saving property owners time and money spent on labor, maintenance, and repairs. *For larger quantity orders call for special pricing. How Zinc Aluminum