K.balt 6-in Variable Cordless Polisher The K.balt 24-Volt Max Brushless Polisher is ideal for all your automotive polishing projects. The random orbit design ensures a swirl-free finish. While the variable-speed dial and trigger offer precision control of the up to 3,800 RPM brushless motor. It is compatible with all Kobalt 24-volt batteries and chargers (sold separately), and also comes with a 5-year limited warranty.