The Milwaukee M12™ 12-Volt Lithium-Ion Cordless Variable Speed Polisher/Sander (Bare Tool) is a two-function tool that runs at 8,300 rpm in sander mode and lowers to a gentle 2,800 rpm in polisher mode. This cordless polisher is part of the M12 series of tools and runs on any M12 battery. At 5.1 inches long, this sander fits in smaller spaces to finish your most detailed jobs. This variable-speed sander features a tool-free accessory-change design that lets you switch modes or change the grit of your sander quickly. At under 1.6 pounds, this lightweight cordless polisher is easy to use for long periods so that you can complete any task with minimal hand strain. A side handle gives you extended control and precision for heirloom-quality results.