Combination Grit Folding Sharpener, Overall Length 4 5/16 in, Overall Width 7/8 in, Overall Height 1/4 in, Abrasive Material Diamond, Grade Coarse, Extra Coarse, Grit 25, Compatible Lubrication Water, Product Type Double Sided Sharpening Stone, Color Black, Blue, Includes Combination Diamond Stones in Folding Handle