20V MAX* 4.5 in. - 5 in. Variable Speed Grinder with FLEXVOLT ADVANTAGE™ Technology (Tool Only)

Product Overview

Take advantage of more power with 20V MAX* tools featuring FLEXVOLT ADVANTAGE™ tool technology. \nThis 20V MAX* 4.5 in. - 5 in. Variable Speed Grinder allows the user the to adjust wheel speed to match the needs of a variety of applications. This grinder delivers up to 48% more power** when paired with a DCB606 FLEXVOLT® battery vs. DCB205 20V MAX* battery. As a part of the PERFORM & PROTECT™ lineup, this tool comes equipped with KICKBACK BRAKE™ and the E-CLUTCH® System. This tool is a part of the expanding 20V MAX* system, and is compatible with all 20V MAX* batteries and chargers.

Additional Features

  • Brake engages when trigger is released stopping the wheel quickly.
  • Tool Connect™ Chip Ready: Chip pocket accepts Tool Connect™ Chip DCE042 and connects with Tool Connect™ Site Manager app for easy asset management on the jobsite. (DCE042 sold separately)
  • Wireless Tool Control System™ - Wireless ON/OFF capability when paired with a compatible DEWALT® dust extractor (sold separately) via Wireless Tool Control™ System


  • (1) DCG409VSB
  • (1) Type 27 Guard
  • (1) Side Handle
  • (1) Hex Key
  • (1) Flange


Battery Type
Disc Diameter
4.5 / 5 in
No Load Speed (RPM)
Number of Speed Settings
20 W
Power Source
Product Length
13 in
Product Weight
3.92 lbs



  • 3 Year Limited Warranty, 1 Year Free Service, 90 Days Satisfaction Guaranteed

We’re confident of the quality of our products, and we’ll repair, without charge, any defects due to faulty materials or workmanship within the specified warranty.

Learn More


We take extensive measures to ensure all our products are made to the very highest standards and meet all relevant industry regulations.

Support Manual


  • *Maximum initial battery voltage (measured without a workload) is 20 volts. Nominal voltage is 18.
  • ** DCG409VSB using a DCB606 FLEXVOLT(R) battery vs. DCB205 DEWALT 20V MAX* battery (batteries sold separately)