This Bakelite Plug is all original and includes the rings and two screws/nuts that hold it together. These are often cracked or chipped exposing live wiring.
The FLAT-PRONG plug will fit the 221Ks and 222ks with the terminal that has the flat prong plugs.
This plug will not fit in the round pin terminal on US made Featherweights.
* Bakelite terminal in photo 3 is shown for reference.