This chainsaw sharpening kit for use with rotary tool is a fast and easy way to sharpen dull, slow cutting chainsaws<br>Ideal to sharpen multiple, different sized chains on chainsaw for increasing the life span of your chainsaw<br>The included grinding stones come in 4 differnet sizes to best match the chains of your chainsaw<br>Grinding depth up to 30 mm<br>Included: 1x sharpening angle guide attachment, 1x adjustment gauge, 4x chainsaw sharpening grinding stones<br>