Belts are sold by the unit/each
Flat Belt style U - Eureka Bravo SC4570 SC5815 - Pack of 2 - Eureka 61120 - 66120
In vacuum mechanic, the belt is more than important, and you have to be an expert to know the right belt for the right appliance. Just for example a little flat belt, round belts, geared belt, power nozzle belts, motor belt, power nozzle belt, belt V drive, and many other brands like Dyson, Electrolux, Eureka, Dirt Devil, and more.
Johnny Vac got all the gear you need to improve your vacuum cleaner system.