Get back to coffee roasting's roots with the Whirley-Pop style of coffee roasting. Roast anywhere from 1/4 lb. to 1.5 lb. of beans over your stovetop! Keep in mind, this method will produce a bit of smoke and you will need a colander to cool your beans after. This unit comes with a 1" dial/5" stem 50-550F thermometer (MT505). Each Whirley-Pop unit is drilled so that this thermometer fits right in the lid and the base sets just above the roasting beans - ensuring an accurate temperature reading. Radius of Whirley Pop is 4" Made from aluminum