New brothread prewound bobbins Size A 144pcs — 96 White + 48 Black, cottonized polyester & clear plastic sides

New brothread 144pcs Size A SA156 prewound bobbins supply a balanced, ready-to-use set of 96 white and 48 black polyester bobbin threads for home and professional sewing machines.

If you stitch often, having a large, thoughtfully proportioned bobbin set reduces downtime, tangles and colour guessing. This New brothread pack contains 144 prewound bobbins made from soft spun polyester (60S/2, 90WT) with clear plastic sides that resist oil and distortion. The Size A (SA156) bobbins are prewound to fit most major home embroidery and sewing machines so you can swap bobbins quickly without rewinding.

Are these bobbins compatible with my sewing machine?

Yes — these are Size A (SA156) prewound bobbins designed for a broad range of domestic embroidery and sewing machines. They fit most common models when the manufacturer specifies Class 15 or Size A bobbins.

• Compatible brands: Brother, Babylock, Janome, Kenmore, Juki, Elna, Quantum Futura, Singer and many others
• Works in most horizontal and vertical bobbin cases for Size A
• Check your machine manual for Class 15/Size A compatibility before purchase

How does the thread quality affect stitching and feel?

The bobbins use cottonized spun polyester (60S/2, 90WT), giving a soft hand while maintaining polyester durability. This means smooth feeding, fewer breaks, and comfortable results when seams touch the skin, without the drawbacks of raw cotton.

• Soft, cottonized polyester provides a comfortable texture against fabrics
• 60S/2 (90WT) balances strength and fine coverage for neat stitch definition
• Prewound winding prevents loose loops and reduces tension adjustments

Why does the pack include more white than black bobbins?

The 96 white and 48 black ratio reflects typical usage patterns where light-tone bobbins are used more frequently. This assortment minimizes the need to rewind common thread colours mid-project and gives faster access to the most-used neutrals.

• 96 white bobbins for common light-backup and underthread needs
• 48 black bobbins for dark fabrics and contrast stitching
• Large total count reduces interruptions for frequent sewers and embroiderers

How do the plastic-sided bobbins help with machine performance?

The bobbins have clear plastic rims that stay stable when exposed to machine oils, preventing swelling or warping that can affect tension. The transparent sides also let you see remaining thread at a glance so you can plan changes without guessing.

• Clear plastic sides resist machine oil and maintain shape
• Visibility of remaining thread reduces stoppages and surprises
• Prewound consistency improves tension stability across bobbins

Who is this for? Sewists and embroiderers who need a dependable, high-volume bobbin supply will benefit most: hobbyists working on frequent garment or quilting projects, home embroiderers switching colours often, and small sewing businesses that value consistent, prewound spools. If your machine accepts Size A/SA156 bobbins and you prefer soft-feeling polyester that behaves like cotton when worn, this 144-piece New brothread kit streamlines setup and reduces interruptions.