Ozone Snow Kite Y-Lines are made to be used with all Ozone snow (foil) kites and the Ozone Contact Snow Control Bar from 2006 to 2014. The Y-Line set comes with distinct red and blue outside lines, an inside grey y-line with one attachment point on the bar end and two attachment points on the kite end, and the 5th flagout safety line (for 2012-2014 models). Made from the highest quality Dyneema, Ozone lines are super durable, woven with a tight, square braid, and treated with a special heating process to make the lines highly resistant to abrasion, water absorption, and stretching. Stretch resistance increases the performance and direct handling of the kite's power and is a crucial consideration when choosing your lines. To "lock" the line, all our line sets are sleeved, stitched and then uniquely re-stretched to 60% of the breaking strain at our factory. Because our lines are fully stretched before you get them, you won't need to adjust or re-stretch them after your first outing.