Product description Color:3 Pack Color: pink ?blue Double layer size: 64x56mm Four layer size: 81x56mm Package Includes:3pcs (2* double layers + 1* four layers) x Lawn Mower Blade Sharpener 1.?Function? - Lawn mower blade sharpener could be used for sharp mower blades to make the blade sharp again. Using in sharpening lawn blade, lawn tractors, mower, rototillers, drill blade,sickle bar cutter?etc. 2.?Advantages? - Fast, automatic, easy, safe, saves time and effort.Mower blade sharpener can simply attach to power drills and sharpen the blade easily and quickly.Making the edge become more effective (Saving time and effort, safer) 3.?Material? - The thickness of grinding wheel is 0.78 inch,thicker than ordinary grinding wheels.Made of corundum, high quality, durable, long service life, blade sharpener can be used repeatedly. (high quality, Can be used many times) 4.?Multi-Scenario 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, Effectively provide your productivity. 5.?Simple to Use?- Mower blade sharpener can simply attach to power drills and sharpen the blade easily and quickly.Making the edge become more effective (Saving time and effort, safer). It only takes 10s to install it, You only need to install it on your electric drill to use it.