Slip one piece on the end of the fly line and push it up the line out of the way. Cut the frayed ends of the butt of the connector loop. Open the connector end with a needle, being careful not to fray it more. Push the fly line in just a little and work the braid onto the line a bit more. Repeat many times in small increments.
Heat shrink the tubing by holding it near an incadescent light bulb.
Be careful not to touch the bulb as the tubing will melt. 30 meters per spool. Very strong, no memory. Per spool - 3.75 Item No. 10 yard coils.