Product Name: Lawn Mower Sharpener. Product Color: Blue Shipping Quantity: 4 pieces Product material: brown corundum Product size: 50 x 50 x 47mm, shank diameter 6.35mm.Get a clean edge: The blade sharpener features a quality grinding stone, strong and sturdy enough to give your trimmer an edge clean and sharp Convenient to use: this sharpener can be used for electric drill and hand drill to sharpen dull blade, mow faster with less effort Rotating balance: our clipper sharpeners feature a perfect rotational balance that saves time and effort Widely used: it is an effective tool for sharpening lawn blade, drill blade, mower, sickle bar cutter, tillers , hand drill and so on, make the edge more efficient Size: 50 x 47 mm (DL) and suitable for most electrical appliances. Convenient to use and very effective