Designed for a smooth transition with dig. 2.5' of intermediate material and 7.5' of T-sink smooths out the cast and keeps you in the zone longer. Looped at both ends for easy transitions. Kit comes with all four tips in a zippered tip wallet. Product Use: Specialist Sinking Tip for Steelhead Line Size: T7, T10, T14 & T18 color: Black Density: Ultra Fast Sink Core Material: Power Core Coating: Hi Density Polyurethane Loop Type: Micro Loop Both Ends with Color Marker At Butt Optimum Temperature Range: 23F to 78.8FDo you need help? Do you have any questions?Ask a question and we'll respond promptly, publishing the most interesting questions and answers for others.