Scientific Anglers Braided Loops - 3 Pack - What are you supposed to do when you don't have a nail knot tool and your fly line doesn't have welded loops? The simple answer: get a 3-pack of Braided Loops. Easy to use and even easier to apply, these loops will turn any loop-less fly line into the looped line of your dreams. Fits most 3- through 10-weight fly lines. Quickly create a loop-to-loop system on any fly line Simple application creates a strong and durable loop Can also be used as a strike indicator