What Our Gearhead® Experts Are Saying: "I’ve climbed with the C4s for years, and the redesign made a great cam even better. They’re noticeably lighter on the rack, the trigger keeper on the larger sizes is a game-changer, and the sculpted lobes feel more refined. Same reliable placement, better handling across the board." Tried, true, and now even better—the Black Diamond C4 Extendable Sling Camalot refines a classic piece of pro for the next generation of climbers. With a 10% weight reduction across the line, sculpted lobes for optimized strength-to-weight, and updated slings for better visibility when racking, these cams maintain the confidence-inspiring reliability that’s made them the gold standard in trad gear. Sizes #4 through #8 now feature an innovative trigger keeper that locks the cam lobes in place for compact racking—saving space and reducing clutter on your harness. The legendary double-axle design still delivers the widest usable range in each size, and the durable C-loop stem offers consistent handling pitch after pitch. Lightweight, high-performing, and easier to manage than ever, this is the cam you want when it counts.