The SP425 is a folding, diamond grit blade sharpener that can hone, knives, scissors, axes, and other relevant tools. The SP425 is two sided with one side featuring a 400# diamond grit surface and the other featuring a 600# diamond grit surface. It also features a double folding handle that allows for compact storage of the sharpener without risk of damaging the grit. The SP425 Sharpener's textured nylon handle helps maintain a secure grip as you sharpen your tool.With Coast's commitment to quality, the SP425 Sharpener is backed by Coast's lifetime warranty against defects in materials and workmanship.