Uni Caenis Monofilament Fly Tying Thread

Uni Caenis is a single-ply, monofilament tying thread for very small flies. Its stated size is 20 denier, making it suitable for delicate patterns where keeping thread build-up on the hook shank to a minimum matters. The thread does not fray during use and creates very fine ribbing, helping with small bodies and the precise attachment of tiny materials.

Construction and use

The single-filament construction remains consistent as it is wound and supports short, even wraps. It is suited to work around the smallest heads, where limiting unintended slippage from the tying base is important. Use it for micro flies, delicate mayfly imitations and other patterns requiring a very light thread layer. Set the bobbin to a modest, steady tension and use short wraps to avoid compressing fragile materials unnecessarily.

• Construction: single-ply monofilament thread.
• Designation: 20 denier.
• Uses: very small flies and fine, delicate bodies.
• Spool and colours: 200 yards, black or white.