After downloading the file, extract it and you'll get a folder containing the Icon Pack. You'll need "Stardock Icon Packager" to apply this icon pack which you can find here. Open "SevenVG.iconpackage" file in Icon Packager and Apply it.
This icon pack is now available for "IconTweaker" as well which is absolutely free to use. Interested users can download the new icon pack using following link: