This is a Hoover UH30010COM Lightweight Upright Vacuum Cleaner Replacement Drive Belt.  Belt has following code stamp:  Hutchinson POLY.V 6PH319 Flexonic 8225 written on the outside of the belt, and is known as a serpentine style belt which is similar to a car belt, and has grooves on the inside of the belt, unlike a traditional upright vacuum belt which is smooth rubber and stretches, this new grooved style belt means better performance, and longer life.  Genuine OEM Hoover Part Nmber 562200001.