Thanks for the question. I found a few of these in my stash that was started as a donation from another quilter. I had no idea what they were for. Interesting, and now I know!
That's what they look like to me, too. I guess I'm not the only person who has never used hers? If you had ever used them, I think you'd remember what you did with them, thus what they were, right?
LOL, Used mine the day before yesterday (first time, had for 3 years) not impressed. Should have saved my money.