- Whetstones from WÜSTHOF offer outstanding sharpening performance. - Due to the very good bond and open-pore structure of the whetstones, new particles are constantly exposed during sharpening. - This combined whetstone has two different sides. - A coarse side for presharpening and a fine side for final honing. - Super fine grain (J3000 / 8000). - For edge maintenance (J3000 grit) and removing the fine burr and honing the edge. (J8000 grit). - Colour: blue / white. - Length 20 cm, wide 6 cm, height 3 cm. - Please take utmost care when sharpening your knives to prevent injuries. - Suitable for use with water !