A quick and easy way to attach leader to fly line or the backing to the line. Provides a loop at the end of the line so you can change leaders quickly. Just snake the hollow braided mono over the end of your line, apply a little crazy glue, loop on your leader and you're ready to fish. Available in three sizes: Regular for lines #3 - #6, large for lines #7 - #12 and X-large for spey heads. 4 per pack.