10-Pack 21mm Aluminum Bobbins – Singer & Brother Sewing Machines
10-Pack 21mm Aluminum Bobbins – Singer & Brother Sewing Machines
Keep your sewing projects running smoothly with these 21mm industrial-grade aluminum bobbins, 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.
Made in Mainland China.
Product Specifications
- Material: Aluminum (silver finish)
- Diameter: Approx. 21mm
- Height: Approx. 8mm
- Aperture (center hole): Approx. 6mm
- Compatible machines: Single-needle flat-bed sewing machines, computerized flat-bed machines
- Use: Sewing, embroidery, garment construction
- Pack quantity: 10 bobbins
Why Choose These Aluminum Bobbins?
- ✅ Durable aluminum construction — resists rust and everyday wear for long-lasting performance
- ✅ Precision dimensions — engineered to fit snugly in standard industrial and computerized flat-bed machines
- ✅ Smooth thread delivery — uniform winding surface for consistent, skip-free stitching
- ✅ Value pack of 10 — always have a spare ready so you never interrupt your workflow
- ✅ Versatile compatibility — suitable for sewing and embroidery applications
What's Included
- 10 × 21mm Aluminum Bobbins
Note: Minor dimensional variations may occur due to manual measurement. Actual color may differ slightly depending on your monitor settings.
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Frequently Asked Questions
Q: Are these 21mm aluminum bobbins compatible with computerized sewing machines?
A: 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.
Q: What makes aluminum bobbins better than plastic bobbins?
A: 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.
Q: How many bobbins come in this pack?
A: 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.