SmartSelect dial helps you select the right sanding base while automatically adjusting the speed, the 4-in-1 sander provides maximum versatility for a wide range of sanding applications, tool free base change allows you to quickly and easily change bases with the push of a button, easy empty filtered dust canister, hook & loop sandpaper system, dust-sealed on/off switch. Specs: orbits/min  8500/13,000 OPM. Includes: sander, (2) interchangeable sanding bases, (1) finger-detail attachment, assorted sheets of sandpaper, storage bag for accessories and bases.