This rugged magnetic stirrer provides adjustable stirring speeds from 200 to 2500 rpm. StirBuddy's direct drive motor/magnet assembly stirs from water to viscous 50% glycerin. The stirrer is 6" in diameter and stands 3" high. A Teflon-coated stirring bar is included. 120 volt, 50/60 Hz power supply. 3-year warranty.