If you are looking for a wheel for creating a superfine edge, the Tormek #SJ-250 Japanese Waterstone Grinding Wheel will do the job. With a fineness of 4000 grit, this wheel delivers a mirror finish with hardly any visible marks. Since it is made to create the finest surface, it has a limited steel removal capacity and cannot be used for shaping* a tool.
This wheel excels at sharpening hand tools like carving tools, knives, scissors, plane irons and wood chisels where a minimum of steel removal is needed and a superior surface finish is demanded. Its unique composition gives the stone an extremely long life. Since the surface left by the Japanese Waterstone is so fine, it is not recommend to hone tools afterwards on the leather honing wheel. Wheel is 10" x 2". Sweden
*Shaping vs. Sharpening - A distinction should be made between the shaping and sharpening of a tool. When shaping you remove steel to achieve the shape and edge angle you want. When sharpening you just touch up an existing shape to renew the sharpness.