Poolin Prewound Bobbins Size L 144pc Black — Cardboard-Sided, 70D/2 Fine Thread

Poolin Size L (SA155) 70D/2 black cardboard-sided prewound bobbins are ready-to-use bobbins designed for multi-needle commercial embroidery machines, supplied as a 144-piece bulk box to keep production running without frequent restocking.

These prewound bobbins combine the Size L (SA155) form factor with 70D/2 thread tension characteristics and cardboard sides for reliable friction and eco-sensitive material choice. Each bobbin measures approximately 2.03 cm in diameter and 0.89 cm in height, packaged as 144 pieces per box for long runs. They are intended to fit most commercial multi-needle embroidery machines and arrive wound precisely to reduce common bobbin issues.

Will these bobbins fit my multi-needle embroidery machine?

The Poolin Size L (SA155) bobbins match the common L/SA155 dimensions used across many commercial multi-needle machines. Check your machine’s manual or existing bobbin measurements (about 2.03 cm diameter and 0.89 cm height) to confirm compatibility.

• Standard L (SA155) sizing: 2.03 cm diameter, 0.89 cm height.
• Designed for commercial multi-needle embroidery machines.
• Use machine spec sheets or an existing bobbin to verify fit.

How do the cardboard sides and 70D thread affect performance?

Cardboard-sided bobbins provide more surface friction than smooth plastic or metal, which can stabilise thread payout and reduce sudden spool slip. The 70D/2 thread thickness offers a finer wound profile sought for detailed embroidery, and the precision-pressed cores help maintain even winding and tension.

• Cardboard sides increase controlled friction and are more eco-conscious.
• 70D/2 yields a thinner, finer wound profile for detail work.
• Precision-cut sides and pressed cores minimize overspin and tangles.

What do I get in the 144-piece box and how does it help production?

The bulk pack contains 144 prewound bobbins ready for immediate use, which reduces machine downtime spent on hand-winding or changing bobbins frequently. This quantity is aimed at small production houses and high-volume hobbyists who prefer to maintain a steady supply without repeated ordering.

• 144 ready-to-use bobbins per box — fewer reorder cycles.
• Prewound design eliminates the need to return cores to your winder.
• Uniform winding reduces the risk of birdnests, jams, and thread waste.

How should I use and store these bobbins for best results?

Install bobbins according to your machine maker’s instructions and test tension when changing thread types. Store in a cool, dry place away from direct sunlight and dust to keep the cardboard sides stable and the prewound thread in optimal condition.

• Test tension after installation before a large run.
• Store boxes horizontally in a dry, temperature-stable area.
• Avoid crushing or dropping boxes to protect bobbin shape and winding.

Who is this for: These Poolin Size L (SA155) 70D/2 black cardboard-sided prewound bobbins are suited to commercial embroiderers, production shops, and serious hobbyists who need a large supply of consistent, ready-to-run bobbins. If you use a multi-needle embroidery machine that accepts L/SA155 bobbins and prefer prewound cores that prioritize consistent tension, reduced birdnests, and eco-minded cardboard sides, this 144-piece pack offers a practical inventory solution without repeated purchases.