Diaface Moonflex Diamond Stone - Ski Edge Tuner for Sharpening, Cleaning, and Polishing any Snowboard or Ski Set - 70mm Whet Stone - Blue 1500 Grit

I don't belive the grit as adv. is correct and the size is a Joke to use !

For those of you who use stones to sharpen your knives, this is a gem. It smooths out the surface of the stone without causing any grit contamination. Also is great for removing any glazing from the surface of the stone. A must have, in my opinion

Bumpy surface is not made good for sharpening small object; like engraver.

If you want razor sharp this small device is the ticket.

good quality, as espected