Cortland's Level Sinking line is designed for shooting heads, trolling, and sink-tips. The Level Sinking line allows anglers to cut to a desired length for heads and tips or use as is for trolling. Ideal for stripping the PVC jacket and creating a loop for quick and easy tip, head, and leader changes.The Level Sinking line is rated in Grains Per Foot (GPF) and Inches Per Second (IPS).