Legendary for smooth, positive operation when holding and releasing control lines, Harken ball bearing cam cleats engage and release easily, and work with a wide range of line types and sizes. Delrin ball bearings allow pawls to open and close effortlessly under both high and low loads; just pull the line straight down, and the cam opens and holds perfectly.Cam-Matics Cam-Matics feature Hardkote anodized aluminum pawls, three rows of ball bearings (two on the 338), and are designed for high-load, high wear applications.