Create the ultimate edge on garden and workshop tools. With approximately 52 billion Diamond particles per square inch, these sharpeners continue working even when they “smooth out”, exposing more sharpening edges to keep tools in like-new condition. The Coarse Diamond Sharpener is for use on heavier steel such as Hedging shears, Lawnmower blades, Axes and preparing very blunt tools before finishing off with a Fine Grade. Full instructions for use included on the packaging. To create the ultimate edge on your own garden tools and blades, thus extending their life and improving their performance. Use for roughing in and honing heavier steel. Length: 15cm Weight: 15g