DSPIAE Siren-Glass Mirror Polishing File – Ultra-Fine Sanding Tool

First and foremost, this file is made of glass. One needs to handle it with care as one would with any glass items.

I used it to polish a 3D printed object and it worked very well with 3D printer filament. I'm going to use it to polish an old MP3 player that has shallow scrateches on plastic surface. I expect it to work very well for that application.

If you have a need to polish something with precision, this file is highly recommended.