Review on SINGER 42145 Class 15 Black & White Threaded Bobbins - 12 Count: Multi-color Thread Set by Gelin Battle

Plastic box It broke when trying to open it. The plastic is fine I think, but I'm trying to use it to sew patches onto a service dog vest like a very thick tactical vest and the thread keeps snapping. But I think that's just because I'm trying to get through so many layers of very stiff fabric. I feel like I would be fine with something regular like a pillowcase or something that isn't very hard. Only white and black, of course, but you get enough of those, which is fine. Maybe I just got an old batch and that's why it broke. To be honest I'm not a big clown, I've only done this 4 times in my life so I really don't know how helpful my review is. I mean, if you want to put a patch on your military uniform that would be fine, but a few layers of durable wedding fabric, for example, isn't that much. . To be honest I'm not a big clown, I've only done this 4 times in my life so I really don't know how helpful my review is. I mean if you want to add a patch to your military uniform that would be fine, but a few actual layers of strong webbing and fabric isn't that much.