This is a new Kasumi Knife Sharpener. It is a handy little sharpener that's necessary to avoid scratching the titanium or polish on any high quality knife. It is easy to use. Simply add a few drops of water to the unit and pull the knife through several times. It features 2 slots, one has a ceramic wheel that turns and one has a diamond wheel that turns. It will sharpen the titanium knives, or any good quality knife blade quickly and easily. It also sharpens ceramic knives by using the diamond wheel only.