Shapton stones are designed to be harder, faster cutting, and denser than any other ceramic water stone on the market. Because they remove material quickly, the time required to hold an angle on the stone is reduced, making free hand sharpening much easier. Shapton water stones are made with finely-graded ceramic cutting media, which wears much more slowly than aluminum oxide and silicon carbide commonly found in other man-made water stones. This results in a similar thickness of sharpening material lasting much longer. The 1K stone is a great place to start when sharpening because of the toothy edge it will leave. The 5K is the perfect progression after the 1K for the refining of the edge it will achieve. The 8K stone is a great stone to progress to after the 5K because of the further refining of the edge it will achieve. This is where the mirror polish will really start to be seen by most sharpeners. These are splash-and-go stones so no waiting while they soak making them exceptional for students and professionals alike. These stones measure 8.25” x 2.75” each.