the speed of the roller has been adjusted several times to 60 rpm. a hose is added to the front of the machine to fix the thermometer probe, which can be bent and fixed at will. roller, front and rear cover and paddle, 304 stainless steel is used. the bottom is a customized universal foot, which can be adjusted according to the actual situation,the universal feet can be adjusted in length and angle at will. just plug in the power and turn on the switch.it is equipped with a bean lifting spoon to check the baking degree at any time.