Not all fly lines have loops. Now you can easily add a loop to any fly line!
These braided loops have a Finger Trap type attachment. While leaving the sleeve on the Braided Loop, simply feed the end of your line up into the back end of the loop. Pull tight then pull the sleeve back down over the braid until about 2 are left. Put a drop or two of waterproof permanent glue on the braids and pull the sleeve over the area with the glue. Trim off any excess braids sticking out the bottom.