MIU Stainless-Steel Battery-Operated Salt and Peppermill Set 2 electric mills quickly produce fresh-ground pepper and salt Pepper mill has carbon steel grinder; salt mill has ceramic grinder Exterior housing made of brushed 18/10 stainless steel; clear acrylic window Push-button operation; light at bottom illuminates how much is ground Each measures 7-1/2 by 2 inches; 6 AAA batteries required