LENOVA CA-133 Lenova's exquisite copper kitchen collection will add a richness that comes only from copper. Made of the highest quality materials, they are lead and mercury free. Copper is to be considered a living finish that ages with use and develops a beautiful patina. Copper is also hypoallergenic, recyclable, and corrosion resistant. Each sink is hand hammered in a process called "work hardening" that strengthens the material. Known as the "red metal" copper posseses a color like no other. It will add a special warmth and beauty to any kitchen or bath.