The DCG414T1 4-1/2″-6″ (115mm-150mm) Grinder with Kicback Brake is maximized for power and durability. It delivers 13 amp power as compared to the D28144N with the portability and convenience of cordless through DEWALT’s revolutionary FLEXVOLT technology. The DCG414T1 comes with one 60V MAX* lithium ion battery and fast charger. 13 Amp Equivalent Motor as Compared to a D28144 Corded Unit Brake engages when trigger is released, stopping speeds of 1.5 seconds with standard grinding wheel (4-1/2″ x 1/4″ Bonded abrasive wheel, non-hubbed) Kicback Brake engages when a pinch, stall, or bind-up event is sensed and the electronic brake engages with maximum force to quickly stop the wheel, reduce the movement of the grinder, and shut the grinder off. E-Clutch activates in less than a tenth of a second when a pinch/stall is detected, shutting down the motor. 9,000 RPM Speed allows the use of up to 6″ wheels Allows for up to 6″ wheel size for both cutting and grinding applications. Specs: BATTERY TYPE LITHIUM ION E-CLUTCH® / OVERLOAD PROTECTION YES HORSEPOWER 2.2 MAX WATTS OUT 1700 W NO LOAD SPEED 9000 RPM SPINDLE SIZE 5/8-11 IN SWITCH TYPE TRIGGER SYSTEM 60V TOOL WEIGHT 4.66 LBS TRIGGER LOCK-ON NO WHEEL DIAMETER 6″ Includes grinder, battery, fast charger, 4.5in wheel and guard, 6in guard, wrench, flanges, and kit bag.