RioRand Professional Kitchen Knife Sharpener System Kit Fix-angle Version II With 4 Stones Powered by RioRand advanced technology 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