Evolution® technology in a space-saving compact design, Two stage grind technology for a finer grind, Built-in air switch (in polished chrome or brushed steel) operation for easy installation & added convenience, Large grind chamber (1005ml) & superior stainless steel grinding elements handle even more waste, Cover control available for conversion to batch feed use, Auto-reverse action for extended product life & trouble free operation, Stainless steel grind elements, Overload protection