Fuse for Canyon Guide harness - PETZL The Canyon Guide harness fuse allows you to quickly release a person in the event of a blockage, without damaging the harness or the rope. It is installed directly on the openable attachment point of the harness for limited space. - Materials: high tenacity polyester, polyamide. - Length: 13cm. - Weight: 9g. - This product has been manufactured in accordance with the requirements of EC regulation 2016/425 for PPE (category 3) according to standard EN 566: 2017 UIAA 104: 2018 except §2.2