Black Diamond C4 rock climbing cams utilize a double-axle design to retract the cam lobes At Black Diamond, innovation never stops, and the fourth edition of the classic Camalot rock climbing cams are no different - the Camalot C4 cams have built upon the success of previous generations with its new redesign. Worry not, its still kept all the features that made it so popular with climbers to begin with, but the modern design now 10 lighter and sleeker with added new touch-points. The Black Diamond Camalots double-axle design allows retraction of larger cam lobes, giving them a much larger expansion range than traditional single-axle units. Because loading forces are shared between both axles, this design has the strength to work as a full-strength cam stop, allowing the cam to function as passive pro if it walks back into a wider part of a crack and umbrellas. Even after the weight loss, the Camalot C4 just as durable as before, with lighter and more sculpted cam lobes that have been optimised for strength to weight. Another improvement to the classic design a visual update to the slings, allowing for easier differentiation whilst racking for ease of use.The Camalot C4 has been given a wider trigger so you can handle it easier, and on sizes 4, 5, and 6, Black Diamond have introduced their innovative new trigger keeper for compact racking and immediate release when youre ready to place.Lightweight yet incredibly durable and functional, the Camalot C4 rock climbing cams are an exceptional update to the well-loved Black Diamond Camalot series.