Langer Bankstein

This stone is a giant and it is suitable for all sizes of knives, even the biggest of your collection. It produces a fine sanding pattern, like a pre-polishing and it sharpens your carbon steel scandi grind knives perfectly.
This 2 Billion year old natural grown stone is made by nature and it did it's best.
The service and communication itself is awesome, a producer and the same time trader who is absolutely trustworthy.