EFFICIENT SHARPENERThis electric saw sharpener provides a quick and easy way to sharpen the knife. Press the tip of the sharpener on a firm surface and you will get a sharp cutting edge in seconds. CUSTOMIZED DESIGNIt is suitable for 14/16/18/20 inch chainsaws, the saw chain blade has 1-2 holes, and there are 2 pins on the saw sharpener (one of the pins is removable) for fixing the electric saw blade. GOOD SHRINKAGE PERFORMANCEThe bottom of the electric saw sharpener is made of high-quality stainless steel springs. If the electric saw is inserted into the sharpener, but the size of the electric saw is not large enough to touch the sharpening stone, please press the spring. The spring makes the sharpener suitable for more sizes of chainsaws. CONVENIENT AND FASTThe sharpener is light in weight, small in size, easy to carry and use outdoors, your hands do not have to touch the sharpening stone. HIGH QUALITYThe chainsaw sharpener is made of high-quality durable plastic and sharpening stones to ensure your safety and quickly restore the working performance of the chain saw. It is a good helper to improve work efficiency. Note: The data are all measured manually, please allow an error of 1-3 cm due to differences in light and display, there may be some color differences, please refer to the actual item received.