Review on 🧵 YEQIN Bobbin Case 45751 + 5 Bobbins: Compatible with Singer Featherweight Sewing Machines 221, 222, 301 & 301A by Shantel Griffin

I was skeptical because everything I've read says reproduction bobbin cases don't work, but I figured Revain's no-risk return policy. That works great. I used the bobbin that came with my 1954 bobbin caseless 221, wound with pink thread and white thread on top. I put the cloth I used to clean the car under the sewing foot. It worked great. I have a coil tension meter that I'll pull out and set the tension on just to be sure, but it works even though I didn't use the coils that came with it. I have attached photos.