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These tiny O-rings slip over the barrel of your bobbin and keep the thread from slipping out. A nice convenience, especially when traveling. Recommended for bobbins with a thin diameter tube and not recommended with bobbins with a flared end. 10 rings per package. Bobbin and thread not included.
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We currently ship within the US, with more countries coming soon.
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🇺🇸 Ship from USA · On Agora since 2025
$1.99