size:16x2.4 Cm Material:Diamond colour:black+silver FED UP WITH DULL KNIVES? SAVE MONEY ON NEW KNIVES AND STAY SAFE with everything you need to keep your knives and restore dull and damaged knives to their former glory. Not only a knife sharpener; the sharpening stones can be used on practically any straight non-ceramic blade tool. BECAUSE ONE CAN'T DO EVERYTHING. The 800#1500 whetstone is suited for repairing dull or damaged knives, while the combination 2000 3000 grit whetsone is perfect for honing a final edge. A comprehensive knife sharpening guide and eBook shows you how to use each to its full potential. Package Contents: 14 x Whetstone Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. 10 different pieces of stone grain 80, 120, 200, 400, 500, 600, 800, 1000, 1500, 2000 GRAIN. 14 pcs Whetstone:10 x black Whetstone & 4 x silver Whetstone The diamond stone is smooth, it uses a single crystal diamond, to wear, long lasting. When polishing, choose 1000 1500 2000 grain if you grinding, 600-800 grain if you make coarse grinding, 80-500 grain.