€¢ Fine grade €¢ 280 grit €¢ Pocket-sized sharpeners are convenient and easily transported €¢ Crystolon is a premium fast cutting silicon carbide abrasive €¢ Fine grit produces a sharp edge perfect for most applications with minimal stone loading €¢ Ideal for outdoor enthusiasts to sharpen scissors; knives; axes etc €¢ Rectangle shape €¢ 3/8 inch x 7/8 inch x 3 inch >> Norton Crystolon Pocket Knife Sharpener; Series: JP13; 3 inch Overall Length; 7/8 inch Overall Width; 3/8 inch Overall Height; 280 Grit; Fine Grade; Rectangle Shape; Silicon Carbide Abrasive; Black."