The 6 mm thickness is becoming a community standard for Edge Pro sharpening stones

To check the battery charge level and the current mode

this is a modern stone

easy and extremely accurate angle adjustment when using stones of different thicknesses

1 Power button | 2 Reset button | 3 Display | 4 Divider | 5 Micro-USB | A Axicube will go sleep after 5 minutes of inactivity

shapton pro kuromaku stone 4 x 1 Grit:12000 The 6 mm thickness isShapton Pro (Kuromaku) sharpening stones are used for sharpening knives on KME and Hapstone knife sharpeners. Shapton Pro is a high end series from Shapton made of aluminum oxide with the magnesia binder. The magnesia binder gives Shapton Pro excellent sharpening quality and performance, and high wear resistance. Shapton Pro series stones are universal and can be used to sharpen knives of any steel including high carbon, vanadium, and chromium steels.