The Coggin Lures Copalure 45 Fish Head is Steve's fish head designed insert inside a double tapered plunger style head shape. The "hump" is near the middle of the head with a fairly steep taper towards the slanted nose. The custom fish heads in these inserts are truly remarkable. Pure fish killers without a doubt. Come with 12" sized skirt saddles. Excellent on Marlin, Sailfish, Wahoo/Ono, and Ahi/Tuna in particular. These are very popular lures and are pure pieces of art to go along with their fish catching abilities.