Grit is rated approximately 2000Idahone Ceramic Stones are used for sharpening knives using Hapstone or Edge Pro knife sharpener. The stone has an extremely high hardness rating.Idahone Ceramic scarcely wears over time. Ceramic stones are available in three grits: medium, fine and ultra-fi..

Grit is rated approximately 1200-1500Idahone Ceramic Stones are used for sharpening knives using Hapstone or Edge Pro knife sharpener. The stone has an extremely high hardness rating.Idahone Ceramic scarcely wears over time. Ceramic stones are available in three grits: medium, fine and ult..

Grit is rated approximately 500Idahone Ceramic Stones are used for sharpening knives using Hapstone or Edge Pro knife sharpener. The stone has an extremely high hardness rating.Idahone Ceramic scarcely wears over time. Ceramic stones are available in three grits: medium, fine and ultra-fin..