Commonly found in ranch fencing, the it is a knot created with a steel wire used to hold a vertical stay wire to a horizontal wire (line wire). This knot technology offers superior rigidity and vertical posture to create one of the strongest ranch fence materials on the market. It is considered the premium option, and tests have proven it has the highest vertical strength, moving and loosening less under pressure. For the full details on fixed-knot fencing, read this article.