You will receive 2 belts when purchasing this item.

They call these round belts as they are not a flat belt type.

Suitable for: Many Direct Air Style Uprights including Eureka, Sanitaire, Clarke, Perfect, Koblenz, and many more also fits Eureka 400, 600, 1400, 1900, 2000, 2100, 4000, 5000, 6400 and 7500 series uprights, and most sanitaires.
4" Diameter Belt (when new)