NewDoarRock Climbing Chest Ascender Abdominal for Vertical Rope Climbing CE Certified Rope Clamp for 8~13MM Rope(Blue)

He made a knee ascender out of it for tree work and climbing rope period

Does what I expected it to do 👌

De bonne qualité, je l'ai utilisé pour m'assurer sur un toit et rempli bien le job , sa résistance et sa prise en main sont vraiment top .

Cumple con mi seguridad.

While this fall arrester works in general, it also damaged my rope. The sharp metal teeth on the cam are angled down for better hold, but once they engage the rope, they also make hard to free up the rope. Once disengaged, the teeth got caught on some the strands and damaged my rope.