Grandberg, a trusted name in chainsaw accessories, introduces a chainsaw sharpener that is compatible with any chainsaw. The chain sharpener is made of aluminum and steel, creating a sharpener that is durable and sturdy. The swivel markings allow the user to set the correct angle for sharpening. Users can also set the height of file and tooth length for universal chain sharpening. The guide bar is less than 12 inches.