7/90/30 STOCKGRIP 200MA unique prefabricated fence. The single picket wire has a "dropper" effect, creating a stiffness in the fence, while the knot allows for some movement of both picket and horizontal wire allowing the fence to absorb impact and spread load. Designed to favour longer spans and suspension fence designs. Each line wire has tension curves crimped into it during manufacture to allow for expansion and contraction in temperature extremes and also to resist