From the Trouthunter website:
The best performing Fluorocarbon on the market.
- Superb knot strength and abrasion resistance.
- Nearly invisible due to low refractive index.
- 50 meter spools afford anglers superior material at a low per meter price.
- Proprietary misty gray polycarbonate large arbor spool. Designed for low material memory and easy handling in a stackable, compact, durable design.
- Premium rubber, water repellant tippet tender. Unique colors for each diameter.