The DEWALT DCG409VS XR FlexVolt Advantage Grinder uses intelligent electronics to sense what battery is in the tool. Both power and torque are increased when using XR FlexVolt batteries. This grinder providing up to 42% more power when used with XR batteries compared to standard 18V packs. A powerful machine with a range of features designed to let you get the job done efficiently and safely. As such, the DCG409 includes an Integrated KickBack Brake as well as the Anti-Rotation E-CLUTCH system which is designed to reduce the chance of dangerous kickback if the accessory gets pinched in the workpiece. An adjustable variable speed dial allows the user to pre-set speeds for more control and correct application. The brushless motor provides increased run time and durability while an.