eaudacBrown corundum material: The lawn mower sharpener is made of high-quality brown corundum. Sturdy and durable, easy to connect with drills and sharpeners. At the same time, the sharpened part is quite rough, allowing the blade to be sharpened easily and quickly. Save time and energy and enjoy a long service life. Easy to install: Installation takes only 10 seconds. You only need to install the sharpener on your electric drill to use it. Both the docking-type electric drill and the handheld electric drill can be used simultaneously, and the blade can be sharpened easily and quickly. Efficient and practical: This is a very useful tool in daily life. This structure is suitable for most electric drills and has an ideal rotation balance, which is both practical and convenient. It can be easily connected to drill bits and sharp tools for long-term use and good value for money. Save time and effort: The sharpened area is very rough, and the blade can be sharpened easily and quickly. This saves time and energy, and is a good helper for a long time. It can be used for a long time and is not easily damaged. Wide range of applications: Widely used for sharpening knives, drills, lawn mowers, sickle mowers, rotary tillers, etc. Easy to use: The sharpening part is quite rough, which facilitates quick sharpening of the blade, reduces time and waiting time. Size: Shank diameter 6.35 mm Color: Red + Orange + Green + Blue + Black Quantity: 5 pieces