Lansky Universal Knife Sharpening System
The original and still the best knife sharpening system you can buy. The 4 sharpening stones come with the knife clamp, the guide rods, honing oil and instructions all in its own case.
This is probably the only system that is still made in the US, everything else has been farmed out to China. It is simple to use and comes with 4 stages of stone - Serrated edge, Coarse, Medium, Fine.
It really will sharpen any knife to a shaving sharp finnish in minutes. I have been using one for years and haven't even had to replace the bottle of honing oil yet. A real winner.