Diamond file for sharpening tips on roller ski poles.

Length: 125 mm
Width: 20 mm
Diamond area: 75x20 mm

We all know the situatoin. The tips of our poles need sharpening in order to increase grip in the asphalt, but you have no file to do it.
This diamond file, has 2 sides. One side coarse and one side fine, and it is so small you can bring it on your rollerski trip. Weight is around 150 gram.