This is the same stir plate as SP1 but for international customers it includes a second stir bar in place of the power supply.  You will need to provide a power supply that delivers 9-12VDC at around 200mA current and has a 2.1mm ID X 5.5mm OD center positive coax power plug. 

(Shown with 2L flask, not included.)

Back Order until 2/14