The Bullet weight are made to add weight for tube flies. These kind of cone heads in an unique shape are designed for "Scandinavian" style flies, You can make light , small, large or heavier flies.
Details:
Pro Bullet weight is available in Small, Medium or Large and will fit Pro Microtube, Pro Nanotube, Pro Flexitube 40/40 as well as Pro Classic (extruded) tubing. Pro Bullet weights slim profile makes it a great option to hide a weight in the fly that helps your fly break through the surface film and start fishing immediately.