The double-sided stone consists of 2 plates with 2 different grit sizes:
220/1000 (820667).
1000/3000 (820674).
Stone grit - with its purpose:
220: blade edge grinding and regeneration.
1000: basic blade sharpening.
3000: blade edge polishing and finishing.
Before use wet the stone with water.
The set includes a plastic box for safe storage.