Uniform tension
Advanced machine winding helps maintain consistent thread tension from the first layer to the last.
Sewtech
Sewtech Size L (SA155) Prewound Bobbins, 70D/2 60WT White Polyester Bobbin Thread, 144 pcs
2288
$22.88 USD
Unit price perSewtech · Embroidery Essentials
Professional Results Start with a Better Bobbin
Prewound Size L (SA155) bobbins with soft-spun 70D/2 polyester thread, engineered for smooth feeding, even tension, and dependable high-speed embroidery.
Size L / SA155 70D/2 · 60 wt. White Polyester 144 Pieces
Made for consistent stitching
Less setup. More embroidery.
Skip manual winding and keep production moving with clean, tightly packed bobbins ready for your next design.
Break resistant
Soft-spun polyester thread supports reliable stitching during demanding, high-speed embroidery.
Clear plastic sides
Transparent flanges resist distortion, do not absorb machine oil, and make inventory easy to identify.
Ready to use
Eliminate pre-winding time so operators can change bobbins quickly and focus on production.
Precision machine wound
Neat layers for smooth, predictable feeding
Each bobbin is tightly and evenly wound to reduce tension changes between layers. The result is cleaner operation, fewer interruptions, and more repeatable embroidery across your batch.
- Consistent thread delivery
- Reduced winding and changeover time
- Reliable batch-to-batch performance
Product specifications
Size L bobbins for commercial embroidery
Also known as Style L or SA155.
20.3–20.7 mmApprox. outside diameter
8.9 mmApprox. bobbin height
70D/2Soft-spun polyester
60 wt.Fine bobbin thread
Fit note: Bobbin names and dimensions can vary by machine. Check your embroidery or sewing machine manual before purchasing.
Wide compatibility
Built for many multi-needle machines
Size L / SA155 bobbins are commonly used with commercial embroidery machines, including compatible models from Sewtech, Ricoma, Happy, Tajima, BAI, ZSK, and Melco. They may also fit selected home embroidery and sewing machines.
- Ideal for many commercial multi-needle machines
- Supports smooth high-speed stitching
- Convenient for production shops and studios
Choose the correct size
Size L is shorter than Size A
They have a similar diameter, but their heights and intended machine types differ.
Size L compared with Size A / Class 15
Reference guide for common bobbin formats
Essential white
A versatile foundation for everyday projects
The neutral white bobbin thread works beautifully across embroidery, sewing, and DIY projects. Its soft, cotton-like feel makes it a comfortable choice for garments and designs worn close to the skin.
- Clean white color for versatile use
- Soft feel suitable for apparel
- Organized bulk packaging for easy storage
Create with confidence
From production runs to detailed designs
Dependable bobbin tension gives your embroidery a strong, clean foundation.
Sewtech Size L (SA155) Prewound Bobbins, 70D/2 60WT White Polyester Bobbin Thread, 144 pcs
2288
$22.88 USD
Unit price perIn stock - Ready to be shipped
2288
$22.88 USD
Unit price per
Product description
Sewtech · Embroidery Essentials
Professional Results Start with a Better Bobbin
Prewound Size L (SA155) bobbins with soft-spun 70D/2 polyester thread, engineered for smooth feeding, even tension, and dependable high-speed embroidery.
Size L / SA155 70D/2 · 60 wt. White Polyester 144 Pieces
Made for consistent stitching
Less setup. More embroidery.
Skip manual winding and keep production moving with clean, tightly packed bobbins ready for your next design.
Uniform tension
Advanced machine winding helps maintain consistent thread tension from the first layer to the last.
Break resistant
Soft-spun polyester thread supports reliable stitching during demanding, high-speed embroidery.
Clear plastic sides
Transparent flanges resist distortion, do not absorb machine oil, and make inventory easy to identify.
Ready to use
Eliminate pre-winding time so operators can change bobbins quickly and focus on production.
Precision machine wound
Neat layers for smooth, predictable feeding
Each bobbin is tightly and evenly wound to reduce tension changes between layers. The result is cleaner operation, fewer interruptions, and more repeatable embroidery across your batch.
- Consistent thread delivery
- Reduced winding and changeover time
- Reliable batch-to-batch performance
Product specifications
Size L bobbins for commercial embroidery
Also known as Style L or SA155.
20.3–20.7 mmApprox. outside diameter
8.9 mmApprox. bobbin height
70D/2Soft-spun polyester
60 wt.Fine bobbin thread
Fit note: Bobbin names and dimensions can vary by machine. Check your embroidery or sewing machine manual before purchasing.
Wide compatibility
Built for many multi-needle machines
Size L / SA155 bobbins are commonly used with commercial embroidery machines, including compatible models from Sewtech, Ricoma, Happy, Tajima, BAI, ZSK, and Melco. They may also fit selected home embroidery and sewing machines.
- Ideal for many commercial multi-needle machines
- Supports smooth high-speed stitching
- Convenient for production shops and studios
Choose the correct size
Size L is shorter than Size A
They have a similar diameter, but their heights and intended machine types differ.
Size L compared with Size A / Class 15
Reference guide for common bobbin formatsEssential white
A versatile foundation for everyday projects
The neutral white bobbin thread works beautifully across embroidery, sewing, and DIY projects. Its soft, cotton-like feel makes it a comfortable choice for garments and designs worn close to the skin.
- Clean white color for versatile use
- Soft feel suitable for apparel
- Organized bulk packaging for easy storage
Create with confidence
From production runs to detailed designs
Dependable bobbin tension gives your embroidery a strong, clean foundation.