Can you tell me what this is?

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This was in my grandmother's sewing things and I imagine about 120 years old. Does anyone have any idea what it was used for. It is metal and there is a small hole at the end. It is 3 inches long at it's longest point and 2-1/4 inches in circumference at it's widest point. No writing on the outside. My grandmother both sewed and crocheted if that helps.
q can you tell me what this is, repurposing upcycling
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