【EFFECTIVE SHARPENER】This electric saw sharpener provides a quick and easy way to sharpen the knife. Press the tip of the sharpener on a solid surface and you will get a sharp cutting edge in seconds. 【CUSTOM DESIGN: Suitable for 14/16/18/20 inch chainsaws, the saw chain blade has 1-2 holes, and there are 2 pins (one of the pins is removable) on the saw sharpener for fixing electric saw blade. 【GOOD SHRINKAGE PERFORMANCE】The bottom of the electric saw sharpener is made of high quality stainless steel springs. When the electric saw is inserted into the sharpener, but the size of the electric saw is not large enough to touch the whetstone, please press the spring. The spring makes the sharpener suitable for chainsaws of larger sizes. 【Practical and fast】 The sharpener is light, small, easy to carry and use outdoors, your hands are free and you don't have to touch the sharpener stone. 【HIGH QUALITY】 The chainsaw sharpener is made of high-quality, durable plastic and sharpening stones to