From the guys who brought us Nymph-Head tungsten beads comes another innovation. Skulls come in three sizes with weights of about .5 grams (S), 1.25 grams (M) and 2.5 grams (L). The Fish-Skull™ design mimics the head, eyes and gill plates of a baitfish producing a more realistic looking profile. The skulls come in 7 cool colors (silver, white, blue, tan baitfish colors and golden chartreuse, dark grey, coppertone and pink/purple. There is a recessed pocket to apply the included 3-D Eyes for that look that predators cannot resist. The skulls are suitable for fresh or salt water patterns and are corrosion resistant. The skulls are also weighted with about 70% of their mass being on one half (top/bottom) so that they can be used to keel the hook to ride upright or inverted. Cool item. Check 'em out at your local fly shop or at http://www.flymenfishingcompany.com/.