【Efficient Knife Sharpener】This electric knife sharpener allows you to sharpen your knives quickly and easily. Press the tip of the sharpener against a solid surface and you will get a razor-sharp edge in seconds. 【Customized Design】Suitable for 14/16/18/20 inch chainsaws, there are 1 to 2 holes for the saw chain blade, and there are 2 pins on the saw sharpener (one of the pins is removable) to fix the chainsaw blade. 【Good Sharpening Performance】The bottom of the electric saw sharpener is made of high-quality stainless steel spring. If the saw is inserted into the sharpener but is not large enough to contact the sharpening stone, sharpen by pressing the spring. The spring allows the sharpener to adapt to multiple sizes of chainsaws. 【Convenient and Fast】The sharpener is lightweight and small in size, easy to carry and use outdoors, and your hands do not need to touch the sharpening stone. 【High Quality】The chainsaw sharpener is made of high-quality durable plastic and sharpening