1. You must ensure that your lawn mower is in condition to guarantee the efficiency of your mowing. Lawn mower blades need to be sharpened from time to time as they become dull or even rusty. 2. Easytouse drillpowered blade sharpener: The sharpener for dull lawn mower blades is specifically designed to be attached to a drill for sharpening lawn mower blades. Simply mount the sharpener to your drill like a drill bit and install it in just 10 seconds to sharpen any dull blade. (Note: Electric drill not included.) 3. Wide application: The lawn mower blade sharpener can be used on dull lawn mower blades to restore their sharpness. It is suitable for sharpening lawn blades, lawn tractor blades, push mower blades, rotary tiller blades, drill blades, sickle blades, etc. It is compatible with most electric drills. 4. quality, durable material: The lawn mower blade sharpening tool is made of doublelayer corundum, which is extremely durable and suitable for longterm use. The design of this lawn mower blade sharpener differs from the old version. The version simplifies the sharpening process and is sturdy and longlasting.