Professional knife sharpener, for different sizes of knives. Quick and easy way to sharpen knife blade. * More stable sucker disc base. Color ruler to show the accurate knife angle. Sharpening stone can use oil or water. * Come with 4 high quality stones, #120，#320, #600 and #1500 * Knife is not included. Simple reassembling needed. * Packing Including: 1 x Fixed-angle sharpening frame, 4 x sharpen stone (180#, 400#, 800#, 1500#), 1 x Pen, 1 x Cleaning Cloth