It has a total of 12 different shapes and sizes (width) ranging from 0-3.0mm for each of the sanding plate and carving guide ruler.
0mm, 1.5mm, 1.75mm, 2.0mm, 2.25mm, 2.75mm, 3.0mm
Each sanding plate is 8cm (length), and the grinding area is 4cm (length).
It is suitable for sharpening and polishing plastic models and resin.
It is also suitable for polishing small parts of the plastic model as well as marking lines on the mecha plastic model. 
Please do not use hard force.
Clean the file surface with a toothbrush and dry it with soft paper.