https://www.mulqueen.com/shop/Machine-Parts/Pfaff-Parts/Pfaff-Bobbin-CasesHooks.htm
Pfaff Bobbin Cases/Hooks
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https://www.kenssewingcenter.com/notions-and-parts/sewing-machine-parts/bobbin-cases/longarm-quilting-machine-bobbin-cases.html
Longarm Quilting Machine Bobbin Cases - Bobbin Cases - Sewing Machine Parts - Notions and Parts
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