3pc Diamond Stone Sharpening Set

Includes extra fine, fine and coarse grades. Grit grades: yellow 180 (coarse),red 240 (fine),green 400 (extra fine). Quick, easy and effortless sharpening. No oil lubrication needed, only requires water. Extremely durable. Ideal for plane irons, chisels, blades, router cutters, hand and garden tools.