Tormek SP-650 Stone Grader is an essential tool designed to change the function of your grindstone with ease. This versatile grader features a fine side that grades the stone to a smooth 1000 grit finish, for precision sharpening tasks. On the other hand, the coarse side quickly reverses the stone to a normal fast grind grit of 220, allowing for efficient and effective sharpening. Additionally, it helps renew glazed stones, restoring their performance and extending their lifespan. Crafted in Sweden, this stone grader ensures high quality and reliable results for your sharpening needs. Model Number: SP-650