Way to useful not to carry
90% of the time that i use this it's to quickly setup my hammock. A tree hugger, 1 biner, & 2 of these make for a 5 minute campsite. As said in the previous posts, you can't rap with them but i do use it in my setup occasionaly. Ultralight, compact, super strong, and can accomodate all but the thickest rope easily. If you're on the trail carry at least 2. I guarantee you'll find a use for them before you return.