This is a Petzl Shunt. I received it from a friend who no longer climbs, but I'm selling it because I don't have a use for it at the moment. It was purchased new a few years ago and has never been used. Please check the photos for the condition. There are no instructions. Everything is shown in the photos. This is a used item that has been in someone else's possession, so use is at your own risk. No claims or returns are accepted. Shipping costs will be covered by me, so excessive price reductions are not possible.