used to trim window tint. you must supply a general purpose utility knife blade and 2 m3 screws. there are 3 measurements on the file names. those measurements will be the distance from the edge of the glass to the edge of the tint.
the 4mm uses m36 screws
the 3mm uses m35 screws
the 2mm uses m3*4 screws
those screw lengths are for the ends of the screws to be flush on the back. i find they thread into the pla and hold fairly well. you could go with longer screws and nuts on the backside if you wanted.

Creality

Ender 3 Pro

Doesn't Matter

No

.2

20%