Quick Sharpening: The serrated sharpener provides a quick and easy way to sharpen chain. Use it to precisely grind the chain of a chainsaw.The chainsaw can clean dull chains in 3-5 seconds.Lightweight and Portable: The chainsaw tool is easy to use outdoors, protecting your hands from harm. Grind the jigs with a chainsaw to make your chainsaw as sharp as new, which makes your work faster and more economical[Standard cutting angle 30] The chainsaw sharpener is installed in the sharpener and can be installed and used at any time to sharpen your chain instantly. Lubricating oil is left on the chains and guide rails to reduce friction and extend service life.[High Quality and Easy to Use] Made of high quality alloy, durable. It is as easy to use as a pencil sharpener, just attach the clip to the handle, put the clamp on the teeth, insert the cutter into the guide sleeve and turn the handle.