Features:Delivers the power of a mains tool with the convenience of cordlessMulti Volt batteries for high power output similar to mains powered toolsBatteries are compatible with existing Hitachi 18V toolsBrushless motor for reduced maintenance and longer lifeSoft startBrake system for extra safetyAuto mode reduces noise when not under loadOverload protectionAnti-restart protection circuit stops the grinder from accidentally restartingSoft startDust and water resistant constructionAbrasive wheel not included