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The DeWalt DCG408B is a 20V MAX brushless 4-1/2 in. paddle-switch grinder built for cordless convenience and safety on demanding jobs. Its brushless motor delivers up to 850 MWO and 9,000 RPM no-load speed, with a kickback brake and E-CLUTCH that stop the wheel in bind-ups. A tool-free guard and paddle switch add speed and control. It suits tradespeople who want cordless freedom and strong safety features, though it lacks a variable-speed dial and requires separate batteries and charger.
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Owners praise the DCG408B for its power and safety features, often noting it matches corded grinders for many tasks. The brushless motor and kickback brake are frequently highlighted, though some wish for a variable-speed trigger and longer warranty.
The DeWALT DCG408B is a 20V MAX cordless 4-1/2" paddle-switch grinder with a brushless motor. The motor delivers up to 850 MWO and up to 9,000 RPM with no load. It keeps a constant speed under load and has no brushes to change. On 1/2" rebar, it makes up to 56 cuts per run.
The grinder has a kickback brake and E-CLUTCH for anti-rotation protection. The paddle switch helps prevent accidental start-ups and lets the user quickly turn the grinder on and off. Mesh screens help block debris from entering the internal components.
It accepts 4 in. to 5 in. wheels. The clip-on guard comes off with a tool-free change system.
