Browse through the photos; it should be fairly self-explainatory. For sale is the kit in the first photo (the shaver, blades, etc. are for demonstrative purposes only - READ - NOT INCLUDED). The kit will come with a 1 inch circle of sand paper to get you started and should last for multiple sharpening sessions. Also, because I use 1 inch circles of sand paper; you can keep using this kit forever...just buy a grit of sandpaper you want (I suggest something in the 400-1000 grit area) and cut out 1" circles to replace the used one.  Completely customer serviceable and should last you a life time. By the way....I say 1" circle of sand paper; that's the goal; but only the center-most 3/4 inch (19mm) is exposed...so you don't need a perfect 1 inch circle....just a shape "resembling" a circle between 3/4 to 1 inch (you could probably cut them out drunk)!

Additionally; if you have sharpening stones that you use to sharpen knives or chisels; you can use those stones to sharpen your shaver too! Just remove the inner ring (hollow one) from the "Sharpening Chamber" and hold it to your stone. Plop your blade into that chamber (using the hollow ring from the "Sharpening Chamber" to brace and guide the blade); and turn your blade with your power tool of choice. The blades will use your sharpening stones to get sharp rather than sand paper. The guide just keeps the blades from flying away in any direction the drill throws it.

Speaking of driving your blade....of course you want to sharpen them blade side down (in contact with the sand paper). The blade should have its drive port exposed (should look like the last photo with a three-lobe port). The driving tool can engage this port; and you can use your power tool of choice. I suggest an electric screwdriver. But you can use a drill, or impact drill-driver. The tool uses a standard 1/4 inch hex shaft and should fit virtually every power drill or electric screw driver made since 1995. My suggestion is to drive it in "reverse" (or screw removal mode, counter-clockwise, etc.) at a fairly slow speed (less than 1000 R.P.M.). Only about 3-5 seconds per blade is all that's needed. If you want, you can mark your blades with a marker first, and observe the sharpener; "sharpening away the ink". 

These shaver blades are only cutting hairs and shouldn't be nicked or heavily damaged. They should NOT need to be re-profiled. A quick honing should suffice. That's why I suggest sharpening in reverse (opposite direction that they cut in). Some fancy blades (like in my red shaver in the pictures) use a spring blade to "pull up" the whiskers. If you sharpen the blades going forward (in the cutting direction); they tend to damage these springs. That's why I suggest using reverse. But it's your blade; and I'm not your mom....do whatever you want. Thank you for reading before buying though!

-David