Corning 6795-620KIT PC-620D Digital Stirring Hot Plate Kit with 10" x 10" Pyroceram Top, 5 to 550 Degrees C, 120V/60Hz Kit includes digital stirring hot plate and external temperature controller, two 9-inch support rods, and a stir bar retriever Plate temperature range of ambient to 550 degrees C is adjustable in 5-degree increments White glass-ceramic top plate for fast heating and resistance to chemicals and scratches Dual LED readouts display temperature and speed settings Speed range of 60 to 1,150 rpm in increments of 5, 10, 20, or 50 rpm