InSinkErator Evolution Cover Control Plus 3/4 HP Batch Feed Garbage DisposalMulti grind technology, with two grind stages to quickly grind difficult food waste Sound seal technology which delivers ultra quiet performance Magnetic cover start activation means no wall switch is required Robust chrome plated die cast zinc stopper that holds back water when needed, and will only turn on disposer when manually activated 40 oz. stainless steel grind chamber and components protect against corrosion, add strength, and help prolong