Summary

This is a 0.88mm thick guitar pick/plectrum. Smooth on one side and some grip on the other.

Would probably print okay in PLA, but results may vary when printing the grip parts. I need to test it properly, but would probably work okay if you really have no other guitar picking options.

I also found that it works quite well for tucking-in fabric when making lampshades with
this lampshade making kit