Use your rotary tool to grind and deburr metal with the 9.5mm Rotary Arch Grinding Stone. Its compact size also offers precision for smoothing welded joints, removing rust and other work on small metal surfaces that require finesse. Use it to sharpen blades on mowers, knives, scissors and chisels, too. The Grinding Stone’s head is made from a high grade aluminium oxide to maintain a low temperature, minimise grit loss and prolong bit life. With a 3.2mm diameter shank, this Sharpening Stone is compatible with all rotary tools.