The Fat Daddio's Aerator Ball Whisk is a sold, durable tool perfect for adding fluff to sauces, creams, and eggs. This whisk offers 3 levels of action: the large blades are made of solids stainless steel, and inside is a steel cage that contains a ball bearing. These three whisking mechanisms bounce off each other, adding air and mixing ingredients better than any whisk – like using three whisks at once.