The M18 125mm Random Orbital Sander delivers corded power with 12,000 Max OPM output. The 7,000-12,000 OPM variable speed dial allows the user more control over the output of the tool to match the orbit speed for the application. The tool’s powerful motor allows the user to remove more material per battery charge. The M18™ Random Orbital Sander, powered by REDLITHIUM™-ION battery technology, delivers up to 60 minutes of runtime on a M18™ 5.0Ah Battery.