Includes sound absorbing upper shell for quiet operation, massive nickel chrome shredder ring and stainless steel grinding elements with 360 stainless steel swivel impellers and grind chamber, permanently lubricated bearings, and Quick lock mounting assembly for faster, easier installation. Also includes overload protection switch with manual reset, self service wrench to free simple jams, corrosion resistant sink flange, corrosion protection shield, dishwasher drain connection, and 2 piece deluxe stainless steel stopper. 5 year warranty.