The EN FORCER is a backup device that can be used in conjunction with a dynamic low rope lanyard (cow's tail)! This product is recommended as a second backup for IRATA technicians and those undergoing rescue training! The cover on the outside of the cam prevents accidental gripping of the device itself! It's a device that even beginners can use with confidence! Size: Compatible rope diameter 10.5-12mm Load Capacity: 100kg *When used in rescue situations assuming two people (200kg), please refer to the instruction manual, conduct a proper risk assessment, and use at your own responsibility. Standards/Certifications: EN12841-2006A, ANSI Z359.1-2007 #Petzl Only taken out of the box, unused.