These Corning® PC-611 stirrers have an 11 x 11 inch plastic (ABS) top and can stir large volumes of liquid with ease. These stirrers are designed for 5 gallon vessels (19L), but can stir up to 10 gallons and can handle many applications that previously required an overhead stirrer. This powerful stirring is achieved with a very compact design that conserves bench space. Stirrer uses a magnet made of rare Earth metals for exceptional coupling strength. The magnet’s strength also centers the stir bar quickly inside the vessel. They operate on 120V/60Hz and are UL and CUL approved to meet needs in North America and other locations with similar requirements. Heavy duty motor and rugged plastic (ABS) top will provide years of reliable service. More compact and lower cost than competitive units. UL/CUL approved. 1 year warranty.