MEGA Genie Magic 梭芯墊圈（適用於長臂縫紉機）

After fighting with tension problems on my longarm for months, these little washers fit perfectly into my bobbin case and stopped the bird's nests cold. They're so simple to install—just drop them in and sew.

I was skeptical that little Teflon washers could fix my bird's nest issues, but dropping them in was instant and the underside of my quilting has been clean ever since.

After months of fighting with tension issues, dropping these Teflon washers into the bobbin case made the back of my quilting smooth for the first time. My machine runs quieter now too.