RIOs Metered ConnectCore shooting line is the ultimate shooting line for longer casts, higher hookups and higher landing rates Each shooting line is built into RIOs ultra-low stretch ConnectCore for maximum sensitivity and performance. This line is RIOs "RangeFinder" system that changes colors every 10 feet, making it easy to measure the distance of each cast. The short front taper stabilizes the cast for maximum distance and flight time, and the large loops on both ends allow for quick rigging changes.