Our patented Curve Nut shape and a feathery weight make the z. Curve Nut the obvious choice for any climber’s rack. The unique design used on the U.L. Curve Nuts and Astro Nuts allows us to orient the curve from side-to-side, giving solid, three-point contact, superior stability in flared placements and placement quality that is easier to judge. By eliminating the traditional swage and attaching the cable directly to the nut, we have made these 30% lighter than the competition. They are also color-coded to match our cam colors. All nuts are hand built, inspected and individually tested to half their rated strength right here in Bend, Oregon.