Includes galvanized steel shredder ring and grinding elements with 360 stainless steel swivel impellers, 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 grind chamber and sink flange, corrosion protection shield, dishwasher drain connection, and 1-piece plastic stopper. 3 year warranty.