New brothread prewound bobbins Size A (SA156) 144pcs White — 70D/2 Polyester, Clear Plastic Sides

New brothread 144pcs Size A SA156 prewound bobbin thread in white is a ready-to-use set of high-tenacity polyester bobbins designed to fit common household embroidery and sewing machines.

Extra bobbins save time and reduce interruptions during sewing and embroidery projects. This pack includes 144 prewound bobbins with clear plastic sides and consistent 70D/2 (60WT) polyester filament, offering smooth tension, low friction, and minimal static. The neutral white colour covers basic stitching needs and serves well as a bobbin base for many thread colours.

How will these prewound bobbins speed up my sewing sessions?

Prewound bobbins eliminate the need to stop and wind thread mid-project. You can swap a finished bobbin for a fresh one in seconds, keeping machine tension steady and workflow uninterrupted.

• 144 ready-to-install bobbins reduce rethreading interruptions
• Plastic-sided spools prevent oil absorption and deformation
• Consistent draw-off tension helps avoid skipped stitches
• Universal white works as a neutral bottom thread for many projects

What machines will these SA156 bobbins fit?

These are Size A / Class 15 (SA156) prewound bobbins made to match the dimensions used by a wide range of home machines. They are compatible with many popular brands, so you can use them in different machines without worry.

• Fits Brother and Babylock models that accept Size A/Class 15 bobbins
• Compatible with Janome, Kenmore, Juki, Elna, and Singer machines using SA156
• Works with many embroidery machine bobbin systems such as Quantum Futura
• Check your machine manual for 'Size A' or 'Class 15' to confirm fit

Why choose 70D/2 (60WT) polyester filament for the bobbin?

The 70D/2 (60WT) polyester filament combines strength with a smooth finish, providing even tension and reliable stitch formation. Polyester is robust, resists breakage, and sheds less lint than cheaper fibres, helping keep your bobbin case cleaner.

• High tenacity polyester reduces thread breakage under stress
• 60WT thickness gives a fine, even stitch profile under garments
• Low friction and static minimize skipped stitches and thread snarls
• Durable for both machine embroidery and general sewing

How do the clear plastic sides affect performance and storage?

The bobbins feature clear plastic sides engineered not to absorb machine oil or warp, so they maintain shape and balance in the bobbin case. The translucency also makes it easy to see remaining thread at a glance, which helps plan spool changes.

• Plastic sides resist oil absorption and dimensional change
• See-through design reveals remaining thread quickly
• Uniform winding reduces vibration and improves stitch consistency
• Individual spools keep thread tidy and tangle-free in storage

Who is this for: Sewists and embroiderers who value uninterrupted production, whether you run a home studio, teach classes, or do high-volume hobby work. This 144-piece white pack is ideal if you want a reliable neutral bobbin supply for frequent projects, multi-machine households, or as a baseline bobbin colour for colour-flexible embroidery. It's especially useful for users of Brother, Babylock, Janome, Juki, Singer, Kenmore, Elna, and compatible embroidery systems who need consistent tension and low-lint performance without constantly rewinding bobbins.