Ozone does offer different length lines 10m, 13, 15, 20, 21, 23, 25, and 27 and well as different length extensions 2, 3, 4, 5 6, and 7m as well as race line starting from 8m to 25m (with 14 different length options available). From my understanding most Ozone Contact bars come with the 25m lines as...