The Worksmith 2-Sided Honing Stone is a versatile tool for sharpening blades, featuring a coarse 240 grit on one side and a fine 400 grit on the other. This original gray stone comes in a convenient case for easy storage and transport. With the Worksmith brand name known for quality and reliability, this honing stone is a must-have for collectors and knife enthusiasts looking to maintain the sharpness of their blades.