How to change and install a Group 1 ribbon on your typewriter.These plastic spools will drop into your Adler, Olympia , Erika , Blue Bird , Triumph , Imperial Good Companion models 3 , 5 and 7 only or Facit portable manual typewriter. This is also great for older manual typewriters where you have the existing metal spools and just need a new ribbon to rewind onto them.

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