These grounded stirring/heating mantles share all the features of a standard heating mantle plus the added functionality of a magnetic stirrer for a wide range of applications. The stirring circuitry, built into the base of the mantle, provides bidirectional stirring speeds up to 520 rpm. An “auto-recapture” function reactivates stirring if it is interrupted or lost for any reason. Coiled heating element is suspended within a thermal insulating cartridge to provide maximum heat transfer and support. Built-in power controller has dial markings from 1 to 10 for repeatability.Chemical-resistant polypropylene exterior remains cool to the touch even when the element temperatures reach 842°F (450°C).