Makita delivers corded grinding performance without the cord with the 18 V LXT® Lithium-Ion brushless 4-1/2 or 5 in cut-off/angle grinder with paddle switch. It's powered by a Makita brushless motor for longer run-time, increased power and speed and longer tool life. For the most demanding applications, Makita's exclusive Automatic Speed Change™ technology automatically adjusts speed and torque during operation for optimal performance. For added convenience, the XAG11Z has an electric brake that stops the wheel in 2 s or less upon release of the paddle switch. The XAG11Z is ideal for grinding, cutting and sanding a wide range of materials including tile, concrete, pipe, conduit and more. It's part of Makita's expanding 18 V Lithium-Ion system, the world's largest cordless tool system powered by 18 V Lithium-Ion slide-style batteries. Makita 18 V Lithium-Ion batteries have the fastest charge times in their categories, so they spend more time working and less time sitting on the charger. For improved tool performance and extended battery life, Makita created Star Protection Computer Controls™. Star protection is communication technology that allows the star protection-equipped tool and battery to exchange data in real-time and monitor conditions during use to protect against overloading, over-discharging and overheating. For increased versatility, the tool can also be powered by Makita 18 V LXT® and compact Lithium-Ion batteries with the Star Symbol™ on the battery indicating star protection inside.