Features: - The grindstone can be simply connected to the electric drill and grind the blade of the lawn mower in a pleasant way. This is a very practical tool in daily life. The sharpening part is very rough, which can easily sharpen the blade quickly and improve efficiency - Simple lawn mower blade sharpener-works with any electric drill-faster mowing - Make the edge of the lawn mower blade sharp, without grooves, unevenness, and keep the blade balanced - 1/4" shank is suitable for any electric drilling rig; built-in guide rail can produce appropriate edges and corners; permanent grindstone - Restore the original sharpness of the blade, which helps to eliminate the blade scratches on rocks and wooden sticks - Cut cleanly, cut finer, and lawn healthier; cut grass faster - Make your blade like new in 10 minute