With the Makita DGA504RTJ, you can even polish on spots where there is no power supply, because it runs on batteries. Still, you can work just as efficiently with the compact 18-volt angle grinder as you would with a wired model. The automatic speed control ensures that you'll work with exactly the right power for every application. This way, you'll maintain a constant RPM, even under heavy load, such as when polishing stone. Thanks to the restart and overload protection, as well as the mechanism that switches off the grinding machine if the grinding wheel jams, you can work safely. The brushless motor and the correct protection against intruding dust and humidity make the DGA504RTJ a durable angle grinder that's suitable for frequent and intensive use.