WÜSTHOF Ceramic Whetstone. 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. Fine Grain ( 1000 / 3000). For removing small nicks and sharpening blunt knives (J1000 grit) and for normal edge maintenance (J3000 grit). Colour: blue / brown. Length 20 cm, wide 6 cm, height 3 cm. Suitable for use with water