[ Material]Crafted from premium abrasive, the sharpening stones are . They maintain their shape well and the powder does not easily come off during the sharpening process. [Affordable & Practical Set]The set includes 4 sharpening plates. This 4 grit combination allows customization of the sharpening process to meet speed and smoothness needs. [Accurate & Effective]These sharpening plates can work solo or alongside sharpening devices. This adaptability results in a more precise and effective sharpening process, ensuring blades. [Versatile]The sharpening plates are Perfect for a variety of cutting tools, including tools grinding, scissors, chisels, planers, plane irons, and kitchen knives. They a broad range of sharpening needs., Weight: 0.34833037396 pounds, Manufacturer: rirue