The Lackmond 4BECKVN Beast V-Shaped Crack Chaser - 4-inch is specifically designed to clean out cracks and/or imperfections in concrete, masonry and a variety of other surfaces. Using a V-shaped design with diamond embedded wedge edges to better fit in cracks, the Lackmond 4BECKVN offers a larger surface to clear cracks than a traditional grinder blade. Use with your favorite angle grinder dry or use a waterproof grinder to use wheel wet. Features: * Clean cracks in masonry, concrete and pavers for patch work * 4-inch x .375-inch x 5/8-inch -11 * Use with your favorite grinder * 15,000 RPM What"s In The Box: * Lackmond 4BECKVN BEAST V-Shaped Crack Chaser - 4-inch