This variable-speed angle grinder is a universal power tool particularly suitable for cutting, grinding, and polishing activities. It's main function includes cutting metal, concrete and stone. And this speed angle grinder will help you to smooth over rough corners or edges with no difficulty. The speed dial is loaded with sophisticated technology. This users settings to match the material to be machined and what task is at hand, so that they can achieve precision and control. The tool generally has a fast motor and is made with great precision toensure its rugged construction for long life. It is applied in fields including auto repair, manufacturing and DIY. The automatic safety break, especially, makes it an ideal choice for job situations.• Its ergonomic design means that from any angle you look at it (Almost) you can comfortably handle this tool. Plus, here is a unique feature found nowhere else in the world - when accidentally dropped, the hood won't suddenly pop off or fly open unexpectedly. 辅助工具