- This Einhell cordless grinder lets you cut, polish and sand freely without cables in the way- It runs on the Power X-Change system, so the same battery works with over 300 devices- At 8500 RPM, it powers through metal or masonry in no time- The softstart function reduces the risk of sudden jolts when you switch it on- You won't need to worry about it starting up on its own thanks to the restart safeguard- The three-position handle makes it easier to work from different angles