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Bobbins 5 per pack
It seems like you're mentioning bobbins being sold in packs of five. Bobbins are small spools, typically made of plastic or metal, that are used in sewing machines to hold the thread. When sold in packs, it's common to find them in sets to ensure that you have an ample supply for your sewing projects.
If you have any specific questions about bobbins or if you need information on where to purchase them, feel free to ask