Harken ball bearing cam cleats hold lines securely and release instantly for easy, precise trimming. Aluminum Cam-Matics® are hardcoat-anodized for high-load, high-wear, continuous adjustment applications. They feature multiple rows of high-load ball bearings and precise V-shape reducing friction allowing them to activate with the snap of the wrist without the need for draw-through cleating. A downward flick snaps the sheet into the cam and stays exactly where you put it. Flick up and the cleat releases instantly, even under high loads. Harken cleats are the only cleats that engage under maximum line tension. Installation requires hole spacing of 27mm and 4RH fasteners (not supplied). This cleat is also available in micro sizing.