Ozone Kitesurf Back Lines Pair (300kg x 2)Ozone Kitesurf REAR Lines are rated at 300kg breaking strength (but are 15% thinner). Thinnest rear lines in the market. Manufactured from DSM SK99 High modulus dyneema which is 15% stronger than previous versions. From 2014 onwards, Ozone front lines are un sleeved at one end (bar trimmer end). Double check the length of lines needed before ordering. V4 bars have only a single knot at the end (3 adjustment knots are now under the floats), previous