- Optimal, reliable sharpening angles for 20° edges
- Always ultra-sharp knives & consistent results, with no prior knowledge needed
- Simple and safe operation thanks to elastomer angle guide

CrissCross® sharpening technology
The special diamond grinding discs of this GRAEF knife sharpener produce a burr-free edge with a micro-serrated surface.

Dizor®
Two different phases arranged at different angles, forming a supporting, arc-shaped edge with double bevel.
SG520 - the reliable knife for all household knives
If you use your knives every day, you know that even the best knife will eventually become blunt. In particular, the daily preparation of meals and cutting fruit and vegetables on different chopping boards causes the knife blade to wear out and therefore needs to be sharpened regularly. With the SG520 knife sharpener from GRAEF and its diamond-coated grinding wheels, blades can be restored to excellent cutting instruments thanks to the two-stage, curved blade design and precise angle guidance. The slow-running sharpening and polishing wheels process the material gently and ensure a long-lasting, sharp blade. The stable 20° sharpening angle with elastomer blade guide enables precise and always safe blade build-up for the user, as the knife is guided by the knife handle, just like when cutting. This makes the sharpening process on different knife types quick and easy - even without prior knowledge. The polishing stage can also be used for serrated knives. The SG520 is therefore a reliable companion for everyday kitchen use and enables stable and long-lasting sharpness for daily cutting tasks in the kitchen.