The new chainsaw teeth sharpener provides a quick and easy way to sharpen the saw chain. The chainsaw can clear the dull chain in just 3-5 seconds. Use the chainsaw chain sharpener to make your chainsaw sharp as new, making your work faster and less laborious. Comes with 3 chainsaw files, perfect for lumberjacks and gardeners who use chainsaw sharpening tools. To adapt to different types of chains with different holes, the chainsaw sharpeners are designed with 2 holes for fixed sharpening, one hole is fixed and the other moves back and forth, very flexible. Check your chainsaw blade in advance to see if there are two holes. If your saw blade is single-hole, you can remove the sliding rivet, which can be moved back and forth, and then install and use it. Make your chainsaw like new with the chainsaw sharpener and save time and effort by not having to replace your chainsaw frequently.