【Durable Material】The red lawn mower blade sharpener is constructed from high-quality corundum, a material known for its strength and durability. This ensures that the sharpener is a reliable and long-lasting tool, capable of withstanding repeated use without wearing down, providing you with a quality item that will serve you well over time. 【Blade Balancer Compatibility】The blade balancer is designed to be compatible with model 42-100, providing a versatile solution for balancing lawn mower blades. Alowing you to choose the appropriate diameter setting based on the size of your blade for an accurate balance test. This ensures that your mower blades are balanced correctly, leading to smoother operation and longer blade life. 【Practical tools】The mower blade sharpener is widely applicable and can be used for sharpening a variety of tools. It is suitable for lawn blades, lawn tractors, mowers, rototillers, garden scissors, drill blades, sickle bar cutters, and more. This makes it a versatile addition to your gardening toolkit, enabling you to maintain the sharpness of all your cutting and trimming equipment with just one tool. 【Easy to Use】 The new lawn mower blade sharpener is quick to install. It takes only 10 seconds to install it on the electric drill to use and can quickly sharpen dull old blades. Effectively increase your productivity and promote fast, automatic, simple, secure, saving time and energy. 【Size & Packing】Size: 1.97 x 2.13 inches for each one. 3 pack lawn mower blade sharpeners in each pack. If you have any problems with the product, you can contact us, we will provide you with a solution within 24 hours. Lawnmower Dull Blade Sharpener, Upgrade Blade Assist Mower Blade Sharpener, Lawn Mower Blade Sharpener Kit Universal Garden Tool Blade Sharpeners for Any Power Hand Drills (3Pcs)