These are available in 2 different girts, 24 grit & 220 Aluminium Carbide flattening stone with a grooved surface for extra abrasion and a channel for excess water to run off. This is a must with any stone to maintain its profile and efficiency.
Unit size – L 170mm X W 55mm X H 25mm
Country of Origin – Japan
SPECIAL NOTES: This stone CANNOT be used on ANY Ceramic knives.