Daiichi

Daiichi 1770 Swimming Nymph

In the mid 1980’s, Daiichi introduced this “swimming nymph” hook to form the foundation for swimming mayfly nymph artificials, and for flies imitating leeches or worm

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Daiichi 1770 Swimming Nymph – Premium Hook for Swimming Nymphs, Leeches and San Juan Worm Patterns


The Daiichi 1770 Swimming Nymph is a specialized fly tying hook designed for swimming nymphs, leech patterns, San Juan Worms and other animated subsurface flies. Its distinctive S-shaped curved shank creates a natural swimming profile, making it an excellent choice for patterns that imitate aquatic insects and other underwater prey with lifelike movement.

Manufactured in Japan from premium high-carbon steel, the Daiichi 1770 features a Straight Eye, 1X Fine Wire construction, 3X Long Curved Shank with an S-shaped profile, Sproat Bend, Bronze finish and a chemically sharpened Needle Point. Originally developed to enhance the natural movement of swimming nymph patterns, its unique geometry has become a favorite among fly tyers seeking highly realistic subsurface imitations.

Why choose the Daiichi 1770?

The distinctive S-shaped shank creates a natural swimming posture that brings nymphs, leeches and worm patterns to life. Its fine wire construction preserves realistic movement, while the chemically sharpened Needle Point delivers fast penetration and dependable hook sets. The factory-shaped profile eliminates the need to bend hooks manually, ensuring consistent strength and precision.

Ideal for tying


◆ Swimming Mayfly Nymphs
◆ Leech Patterns
◆ San Juan Worm
◆ Dragonfly Nymphs
◆ Damselfly Nymphs
◆ Aquatic Larvae
◆ Swimming Caddis Larvae
◆ Other Swimming Subsurface Patterns


Technical Specifications


Daiichi 1770 Swimming Nymph – Technical Specifications
Type
Swimming Nymph Hook
Sizes
#6 – #16
Wire
1X Fine Wire
Eye
Straight Eye
Shank
3X Long Curved Shank
Bend
Sproat Bend
Barb
Barbed
Finish
Bronze
Point
Chemically Sharpened Needle Point
Pack
25 pcs.
Specifications
  • Purpose
    Swimming Nymph