Я купил их, потому что устройство намотки шпульки на старой швейной машине Singer 66 1910 года не подходило ни for what reason. everything advertised. It's 5/8 but the spool friction wheel is 3/4". I chose 30mm OD and 22mm ID and they fit well. This is the only "spare" friction wheel I could find, and it works.
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