80lb braid with flossed marks which stop kite clips at predetermined distances which creates the strongest system available. These marks were designed for the M2 as well as the R2 clips, but also work with other brands of clips. Distances are approximately kite to #1 clip 120 feet, 80 feet between each of the clips, and 100 feet from the #3 clip to the end of the kite reel. The floss marks also have small stopper marks to stop the clips from advancing from blowing to the next mark on a windier day.