(None, Regular #3-#6) - The Rio Braided loops make attaching a leader to your fly line a snap. It 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, slide the sleeve over the fly line to the end any your good to go. For added strength, a few drops of super glue can be added to reinforce the connector. The Rio Braided loops are great for connecting leaders to fly line. Available at TravelCountry.com.