Black Diamond C4 Camalot: 6 Increasing your chances of grabbing a cam that fits, the Camalots double-axle design allows retraction of larger cam lobes, giving our cams a much larger expansion range than single-axle units. Because loading forces are shared between both axles, this design has the strength to work as a full-strength cam stop, letting you use the cam as passive pro and adding security if the unit walks back into a wider part of a crack and umbrellas. This is the third generation of BD Camalots and they just keep getting better. They are 30 lighter than the originals. The cable loop trigger is easy to grab, and our slings are large enough to manipulate with gloves.