General description The 50mm Blade Sharpener Plus is a universal rotary lawn mower blade sharpener designed for efficiency and ease of use. The package includes 9 pieces of sharpeners, making it a great value for maintaining your lawn equipment. Technical specifications Size: 5 x 5.5 cm Material: High-quality corundum Installation Installation takes only 10 seconds. Simply install the sharpener on an electric drill. Usage Ideal for sharpening lawn blades, drill blades, lawnmowers, mowers, and cultivators. Compatible with most electric drills and hand drills. Features a rough sharpening surface for quick and efficient blade sharpening.