Take a blade from dinged and rusted to scary sharp with this 2-in-1 sharpening stone. One side is extra coarse (220 mesh/60 micron) – ideal for quickly fixing a nicked or corroded edge. The coarse side (325 mesh/60 micron) is a bit more refined, just the ticket for quickly sharpening a neglected blade. Rubber feet keep the stone from slipping. Monocrystalline diamond on steel plate resists wear, holds up through years of use.