Regarding the extra quality feature, I assume you're referring to the website's option to download videos in higher quality. Some websites, including 3gpking.com, may offer additional quality settings that allow users to download videos in better resolutions, such as 720p or 1080p.
Searching for a "proper article" regarding 3gpking.com and its "extra quality" content reveals that the site is a third-party platform primarily used for hosting and downloading video content in the 3gpkingcom extra quality
