The Black Diamond Stoppers #1–13 are time-tested passive protection and a direct evolution of the original chocks that helped launch the clean climbing revolution. These classic trad climbing nuts remain an essential piece of protection on any traditional climbing rack.
Designed with a transverse taper, Black Diamond Stoppers allow secure sideways placements in flares, constrictions, and shallow seams where cams may not fit. Their versatile shape makes them reliable protection for a wide range of traditional climbing placements.
Each stopper is color-anodized by size for quick identification on your rack, while the rounded edges help reduce rock damage and allow for easier removal with a nut tool. The units are finished with durable galvanized steel cables for long-lasting performance in demanding alpine and trad climbing environments.
Ideal for trad climbing, multi-pitch routes, alpine climbing, and anchor building, Black Diamond Stoppers remain one of the most trusted forms of passive protection in climbing.
Durable aluminum heads and steel cables
Transverse taper is versatile in flares, constrictions and parallel cracks
Rounded edges for easy cleaning (smaller sizes are straight for better surface contact)
