Product Description Color: 3-pack Color: pink blue Double layer size: 64x56mm Four layer size: 81x56mm Package includes: 3 pcs (2* double layers + 1* four layers) x lawn mower blade sharpener 1. Function - Lawn mower blade sharpener can be used to sharpen lawn mower blades to make them compatible with sharp again. Used to sharpen lawn mower blades, lawn tractors, lawn mowers, tillers, drill bits, scythes, etc. 2. Advantages - Fast, automatic, simple, safe, saves time and effort. The lawn mower blade sharpener can be easily attached to electric drills and sharpens the blade easily and quickly. Makes the edge more efficient (saving time and effort, safer) 3. Material - The thickness of the sharpening stone is 0.78 inches, thicker than ordinary sharpening stones. Made of corundum, high quality, durable, long service life, the sharpener can be used repeatedly. (high quality, can be used many times) 4. Multi-scenario application - Widely used to sharpen lawn mower blades, drill bits, lawn mowers, scythe cutters, tillers, etc. This grinder can be used for electric drills and hand drills to sharpen the blunt, effectively increasing your productivity. 5. Easy to use - The lawn mower blade grinder can be easily attached to electric drills and sharpen the blade easily and quickly. Make the edge more efficient (saving time and effort, safer). It only takes 10 seconds to install it, you just need to install it on your electric drill to use it.