The Cortland 444 Steady Sink ST7S is a specialized sinking fly line designed for precise depth control and consistent sink rates. Here are the key details:

Specifications:
– Model: 444 Steady Sink ST7S (Sink Type 7/Super Fast Sink)

Cortland 444 Steady Sink ST7S Steady Sink Fly Line 40 Feet 3.5 to 4.0 IPS

– Sink Rate: 3.5 to 4.0 inches per second (IPS)
– Length: 40 feet (typical for sinking heads; full lines may be 90+ ft)
– Core: High-density sinking core for rapid descent
– Coating: Smooth, abrasion-resistant coating for durability
– Weight: Matches standard fly line weights (e.g., 5wt, 6wt, etc.)—check specific line size.

Key Features:
1. Fast Sinking: Ideal for deep-water fishing (e.g., lakes, stripers, salmon, or saltwater).
2. Short Head (40 ft): Enhances turnover for streamers/sink-tip applications.
3. Consistent Sink Rate: No taper, ensuring uniform depth control.
4. Compatibility: Works with intermediate/floating running lines for versatility.

Best Uses:
– Streamer fishing for trout/bass in deep pools.
– Saltwater species (striped bass, permit, etc.).
– Swinging flies in strong currents.

Tips:
– Pair with a fast-action rod for optimal casting.
– Use a loop-to-loop connection for easy head changes.
– Adjust retrieve speed based on depth/target species.

If you need the exact weight (e.g., 6wt, 8wt) or other variations (e.g., ST6, ST8), check Cortland’s website or product packaging. Let me know if you’d like help with setup or alternatives!