The Daiichi 1710 hook is a heavy wire, 2X-long hook used for tying nymph patterns (the larvae of mayflies, caddis flies, and stoneflies). They're also a very popular hook for tying grasshopper patterns.
Details:
Down eye
2X long shank
1X heavy wire
Round bend
Bronze finish
Uses: Wet flies, standard nymph patterns, muddlers, hoppers