- Set of 5 universal sharpeners for lawn mowers, ideal for keeping blades sharp and efficient. - Made of natural corundum, a durable material that ensures fast and precise sharpening. - Facilitate finer and cleaner cuts, promoting healthier grass and reducing cutting effort. - 1/4 inch shank compatible with most electric drills, easy installation. - Integrated guide to achieve the optimal sharpening angle and maintain blade balance. - Multifunctional: suitable for kitchen knives, garden tools, razor blades, and more. - Compact, lightweight, and portable design, perfect to carry and use anywhere. - Not recommended for serrated blades or ceramic knives.