Made of the highest quality of 18/10 stainless steel, 3 mm thick, very durable, ergonomic. Knives have double serration for a durable sharpness. Dishwasher safe. Enhance your dining experience with this beautiful Italian flatware! Designed in Italy Service for Four (4), 20-piece Flatware Set. Dishwasher safe, durable and food safe. Knives have double serration for a durable sharpness.