- Smooth cutting aluminum oxide abrasive (India Side)
- Ideal for deburring, generating keen edges and finishes (India Side)
- Premium silicon carbide abrasive (Crystolon Side)
- Ideal for general sharpening (Crystolon Side)
A fast cutting medium grit Crystolon on one side and a fine India abrasive surface on the other for producing keen, long lasting edges on quality tools. Crystolon side is dark grey in color, India side is orange.