Fits most all Singer Featherweight 221 models as well as the 222 hook assemblies... For the common hook assembly style.

The most common cause for a seized machine is thread caught and often hidden behind the bobbin case base.  Do not force the machine or severe, costly damage will occur to the hook assembly.  This tool is designed to be used with universal application on Singer 221, 222 and Singer 301 vintage hook assemblies.  The new Thread Jam Removal Tool makes disentangling a thread jam very easy, and it can all be done without taking the hook assembly apart!