Small Cosplay Grommet/Eyelet
Different and more costume-friendly version of my other grommet, especially since the other one required glue.
This grommet/eyelet is designed to have a very close, tight fit, and may require a tap from a small hammer or mallet to assemble (a bit like a metal grommet). There is a "post" side and a "washer" side that snap together, and both are slightly chamfered on the edges to smooth things out and to try to reduce wear on any cord threaded through them.
I wouldn't trust them with much functionally - a metal grommet will be much more durable - but I only needed these for aesthetics for a costume, so they worked fine for me!
The dimensions of it are:
Center inner diameter: 3mm
Center outer diameter: 6mm
Full outer diameter: 12mm
Gap width between sides: 1mm