The world’s first brushless die grinder that delivers corded performance with over 20 minutes of grinding and up to 10X longer motor life.The M18 FUEL™ ¼” Die Grinder delivers maximum sustained power with 20,000 RPMs capable of running carbide burrs or up to 3” flap wheels for grinding or surface preparation applications. The M18™ REDLITHIUM™ XC5.0 Battery provides up to 25 minutes of grinding with superior pack construction and electronics. The POWERSTATE™ Brushless Motor provides up to 10X longer tool life and lower cost of ownership than traditional brushed motors. The die grinder features REDLINK PLUS™ Intelligence, the most advanced system of cordless power tool electronics, for maximum performance and longest tool life.