Poplar dowels for using screw eyes( thanks TU) .Super glue sealer( thanks again ). Jonestones foil, then D2T. Paint and then ACC topcoat.
They have 2 3/8 dia brass sleeves installed perpendicular to the centerline. 5/16 dia BB inside and capped off with .015 brass end caps.
Very loud, and sooo much fun to fish with. About 6hrs labor for each. A labor of a insanity.
Hope you like!