SINGER2139 Class 66 Bobbins, Metal, 4-Count,

The transparency of these bobbins is a game-changer. Being able to see the remaining thread supply at a glance saves me time and frustration, ensuring I never run out of thread unexpectedly mid-project. It's a simple yet ingenious feature that enhances the overall sewing experience.In terms of performance, these bobbins excel. Crafted by a trusted brand like SINGER, they boast exceptional quality and durability. I've found that they wind smoothly and evenly, resulting in consistent tension and stitch formation. Whether I'm working on delicate fabrics or heavy-duty projects, these bobbins deliver reliable results every time.The pack of four bobbins is also a great value proposition. It provides an ample supply to keep my sewing without interruption, and the convenient storage case ensures they stay organized and easily accessible.

For reference- I bought these for my 1992 Singer 5705C. None of my local craft stores carry this bobbin model anymore, so I'm glad Amazon had them. They're perfect, but there is a caveat- be careful how many you order! I purchased 2 of what I thought were single packs. I wound up with 6 packs, for a total of 24 bobbins. I don't need 24 bobbins, so I'll be giving some away, but for the price, I'm not mad! However, I was very surprised when I opened the package and saw 3x the number of bobbins I wanted.

I love these!

Good fit

Fits singer stylist 533

It's a rounded singer bobbin, that's pretty much it. The fit is very snug around the bobbin winder. Might want to smooth that down a bit and always inspect for sharp edges.

I bought these yesterday, haven’t tried yet, but when i was purchasing I thought buying 1 meant 1 individual bobbin, and buying 4 meant the pack of 4 bobbins 😅 But no! Buying 1 means 1 PACK of 4 bobbins, so now i have 16 bobbins lol! good thing i have so many sewing machines haha

The media could not be loaded.  I bought two packages. Neither work with my Singer 99. I just inherited this machine and didn't have any bobbins to fit. Saw that I needed Class 66 bobbins. Ordered and cannot get them on. The bobbins from one package stop and no matter how hard you push they will not go on. The other go on but the small set pin does not line up with the correct hole in the bobbin. Bobbins from one package were also very flat, not domed as they should be. There was also areas of chipping and rust on these flatter bobbins. The other pack looks to be correct in the dome shape. Will be returning.

These are the right size snd the size had solved my issues.

So glad I found these for my dinosaur machine

Bought a vintage sewing machine and needed a new bobbin. These fit perfectly. Delivered on time

Die Lieferung hat wie angekündigt etwas länger gedauert, aber die Spulen haben die erwartete Qualität und sind passgenau! Gerne wieder!

They were just what I needed thanks