Includes galvanized steel shredder ring and grinding elements 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 stainless steel sink flange, dishwasher drain connection, and 1-piece plastic stopper. 1 year warranty.