A flattening and touch-up stone from Tojiro, the Japanese maker with over 60 years of knife-making experience. Whetstones dish in the middle with use; rubbing them against this stone restores a flat, true surface so your sharpening angles stay accurate.

• Type: Flattening / touch-up stone
• Use: Levelling dished whetstones, quick edge touch-ups
• Model: F-421
• Maker: Tojiro, made in Japan