Usage Tips:Upgrade And : The version Lawn Mower Blade Sharpener made of double layer corundum, , durable, long service life, blade sharpener can be used repeatedly.Our lawn mower blade sharpeners are supplied by the factory,Absolute quality assurance. Wide Application:Widely used for sharpening lawn blade, drill blade, mower, sickle bar cutter, rototillers, and so on.This sharpener could be used for power drill and hand drill to sharpen the dull one. Size & Packaging: Size: 2.3" x 2.3" x 0.66" for each one. Packaging : 3pcs Blade Sharpener. Simple to Use: It only takes 10s to install it. You only need to install it on your electric drill to use it. And it can quickly make blunt old blades sharper.Effectively provide your productivity. Service : You can contact us if you have any problems with the product, we will provide you with a solution within 24 hours. assured purchase.