Silicon carbide Abrasive grain kit (4 types)

"Silicon carbide leveling powder set allows to level any synthetic stone.
Silicon carbide is a chemical non-organic compound of carbon and silicon. Abrasives made of green silicon carbide are used for finishing metalworking tools, hard alloys, ceramics, stone productions and editing abrasives made of other materials.
4 powder types with different gritness in a set:
F80
F230
F400
F600"