Harken's Cam-Matic cleat has multiple rows of high-load ball bearings to reduce friction so that cams open easily for snap-down, rather than draw-through cleating. The cam horns and smooth V-shape guide line for easy entry. This allows precise sail control without having to readjust the cleated line. The Cam-Matic® is the only cleat that will engage under maximum line tension. Rounded teeth hold securely by squeezing rather than cutting into line to reduce wear. Lightweight fiber-reinforced Carbo-Cams® are for racing where weight is critical, or where adjustments are less frequent. Ball bearings and Carbo-Cams® are UV-stabilized with carbon-black additive for maximum protection.