[Quality Chainsaw Grinder] This chainsaw grinder is made from high quality ABS plastic and durable whetstone. Three grinding wheels are provided for replacement. Please note that the grinding wheel has a high wear resistance which keeps the chain and guide bar oiled, reducing friction and helping to extend the life of the product, so you can always use this sharpener from chainsaw. [suitable for 14-20 inch chainsaw chain] this chainsaw blade is designed with 2 holes for sharpening knives, one hole is fixed and the other is adjustable, this which makes the installation very flexible. It is suitable for 14/16/18/20 inch chainsaws. [Easy to use and easy to carry] This chainsaw blade sharpening kit is lightweight and easy to use outdoors. Just install the sharpening stone correctly, attach the chainsaw to the chainsaw hole, then close and lock the portable chainsaw. Finally, easily clamp the chainsaw foot and start using it. You can sharpen your tools anywhere and anytime. [3 Removable Grinding Wheels] The grinding wheels are removable and replaceable. Don't worry if it loosens after opening the package. You can open the chain grinder kit and re-insert the Stone into the black clip designed to secure the Stone.Make sure the tool will do the job well. Note: The data is manual measurement, please allow 1-32cm error, due to differences between light and color. screen, there will be a certain color difference, the specific received in kind prevail.