Scientific Anglers Sonar T-12 Fly Line – Dark Blue (Sold by the Foot)

The Scientific Anglers Sonar T-12 Fly Line – Dark Blue is a fast-sinking fly line available by the foot, giving anglers the flexibility to build precise, custom setups without committing to a full bulk spool. Designed for getting flies down quickly, the T-12 designation is ideal for targeting fish holding in deeper water or strong current where consistent sink performance is critical.

Built with the reliability Scientific Anglers is known for, this line is perfect for cutting exact lengths for shooting heads, replacing worn sections, or dialing in specialized rigs. The dark blue colour makes it easy to identify while keeping your setup clean and organized on the water or at the bench.

Whether you're trolling, casting heavy streamers, or customizing your fly line system, this per-foot option helps reduce waste and gives you full control over your setup. A practical choice for anglers who demand dependable performance and the ability to fine-tune their gear for specific fishing conditions.