InSinkErator offers Evolution 250 Food Waste Disposer. Evolution 3 stage grind technology allows this product to be one of the most powerful food waste disposers, including auto-reverse grinding function. Multi-layer sound insulation helps to prevent any loud noises and vibrations during your experience with the disposer. Features such as built in Air Switch and High Torque Dura Drive Induction Motor lead to smoother food disposal as well as user safety.