Hellgrammites are a carnivorous aquatic insect larva used for fish bait. If it's defined as fish bait, then it must work. Fish won't be able to tell this little sinking lure from the real thing, and to them it looks delicious. Pick up a few and you'll see they're worthy of their definition. Per each. Size: 1-3/4", 3/32 oz. #14 treble hooks. Colors:(273)Molting, (274)Mature, (275)Immature.