This Farberware double boiler insert is a vintage piece that is compatible with both electric and gas stove types. It is made of aluminum with a stainless steel surface coating and has a round shape with a 6 3/4 inch diameter. The set includes the double boiler insert and a lid, and has a total length of 12 1/4 inches including the handle. This collectible cookware is a great addition to any kitchen and is perfect for making delicate sauces or melting chocolate. The Farberware brand is known for its quality and durability, making this piece a great investment. Made in the United States, this double boiler insert is in excellent used condition.