This set of two replacement belts is designed for Eureka U vacuum models, including the Eureka 3040, 4200, 4100, 4400, 4300, 4600, 4500, 4700, and e900. They are compatible with electric corded power sources and come in a classic black color. These belts are perfect for those who want long-lasting and reliable replacement parts for their vacuum cleaners. They are a great value, as you get two belts in one set.