Every USB flash drive contains a flash memory chip and a controller chip. The controller acts as the brain, managing data flow and communication with your computer.
The official is the reference utility. It is designed for use with any UFD (USB Flash Drive) equipped with an SK62XX series control IC.
Counterfeit USB drives (e.g., a fake 1TB drive that is really 32GB) use SkyMedi controllers. The "extra quality" tool includes a that identifies fake capacity tables and restores the true physical size.