{"product_id":"10-pack-21mm-aluminum-bobbins-singer-brother-sewing-machines","title":"10-Pack 21mm Aluminum Bobbins – Singer \u0026 Brother Sewing Machines","description":"\u003cp\u003eKeep your sewing projects running smoothly with these \u003cstrong\u003e21mm industrial-grade aluminum bobbins\u003c\/strong\u003e, designed to fit a wide range of Singer, Brother, and other flat-bed sewing machines. Constructed from durable, lightweight aluminum, these bobbins are resistant to rust and wear — ideal for both home embroidery enthusiasts and professional garment workshops.\u003c\/p\u003e\n\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum (silver finish)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e Approx. 21mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e Approx. 8mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAperture (center hole):\u003c\/strong\u003e Approx. 6mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible machines:\u003c\/strong\u003e Single-needle flat-bed sewing machines, computerized flat-bed machines\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUse:\u003c\/strong\u003e Sewing, embroidery, garment construction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePack quantity:\u003c\/strong\u003e 10 bobbins\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose These Aluminum Bobbins?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eDurable aluminum construction\u003c\/strong\u003e — resists rust and everyday wear for long-lasting performance\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003ePrecision dimensions\u003c\/strong\u003e — engineered to fit snugly in standard industrial and computerized flat-bed machines\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eSmooth thread delivery\u003c\/strong\u003e — uniform winding surface for consistent, skip-free stitching\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eValue pack of 10\u003c\/strong\u003e — always have a spare ready so you never interrupt your workflow\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eVersatile compatibility\u003c\/strong\u003e — suitable for sewing and embroidery applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e10 × 21mm Aluminum Bobbins\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eNote: Minor dimensional variations may occur due to manual measurement. Actual color may differ slightly depending on your monitor settings.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eYou May Also Like\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/3-pack-double-sided-metal-nail-files-manicure-pedicure-set\"\u003e3-Pack Double-Sided Metal Files | Precision Finishing Tools\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/25-in-1-precision-magnetic-screwdriver-set-pro-repair-tool-kit\"\u003e25-in-1 Precision Magnetic Screwdriver Set | Pro Repair Kit\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/34-compartment-double-sided-hardware-storage-box-removable-dividers\"\u003e34-Compartment Double-Sided Hardware Storage Box \u0026amp; Dividers\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Are these 21mm aluminum bobbins compatible with computerized sewing machines?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! These bobbins are designed for both standard single-needle flat-bed sewing machines and computerized flat-bed machines, making them a versatile choice for a wide range of sewing setups including Singer and Brother models.\u003c\/p\u003e\n\u003ch4\u003eQ: What makes aluminum bobbins better than plastic bobbins?\u003c\/h4\u003e\n\u003cp\u003eA: Aluminum bobbins offer superior durability and resistance to rust and wear compared to plastic alternatives. Their rigid construction helps maintain consistent thread tension, reducing the chance of skipped stitches or thread jams during extended sewing sessions.\u003c\/p\u003e\n\u003ch4\u003eQ: How many bobbins come in this pack?\u003c\/h4\u003e\n\u003cp\u003eA: This pack includes 10 aluminum bobbins, giving you plenty of spares to pre-wind with different thread colors so you can switch quickly between projects without stopping to rewind.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Are these 21mm aluminum bobbins compatible with computerized sewing machines?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! 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