The grindstone is floating in the practical plastic holder, which allows the grindstone to dry quickly from both sides. The plastic holder is additionally equipped with a drain channel and a collecting basin for water, from which the grindstone can be moistened with water again and again during the grinding process.

One side for sharpening the blade, one side for sharpening the edge.

Waterstones are classified according to their grain size: Rough stones for shaping and grinding of cut-outs and notches have a grain size of approx. 80-220, grinding stones 800-2000 and polishing stones 3000-12000.