This is a Petzl Tibloc, an emergency ascender. I received it from a friend who no longer climbs, but I'm selling it because I already use the same one. It's an older model, but it functions the same as the current model. Although it's unused, it has been in someone's possession, so please understand that no claims or returns will be accepted. Also, I will cover the shipping costs, so please refrain from price negotiations.