EDM Polishing Stones
EDM polishing stones and Die*Star are the most popular stones
Remove the tough, hard scale left by the Electrical Discharge Machining process, breaks down slowly and maintains shape for a long time.
Excellent results on all hard tool steels. Per Box (12)
Hard / coarse polishing stones ideal for spark erosion removal.
Gesswein equivalent would be: EDM
More sizes and grades here