Ferrule plugs come standard on all of my rods and I offer three basic patterns. Ferrule plugs keep dirt, dust, and moisture from getting into your female ferrule. Plugs come in handy when packing rods into remote areas especially if you are camping. Campsites increase the opportunity for dirt to work it's way into just about everything and the last thing you want is dirt jammed into your ferrule. I turn these plugs with extremely small cutting tools under a magnifier.
Flor grade cork and nickel are turned in tandem resulting in a smooth even profile~ Figure 1 profile as seen in above illustrations
All ferrule plugs are solid milled nickel, either polished bright chrome, or blued. The cork stopper provides an easy fit without wearing the interior of the ferrule.
~Clint Joseph Bova