Microsoft Store has re-posted a new version of the Windows 7 USB / DVD Download Tool, after pulling it down earlier, because it violated a number of GNU General Public License (GPL) terms.
It is now available under the GPL.
The Windows 7 USB/DVD Download tool allows you to create a copy of your Windows 7 ISO file on a USB flash drive or a DVD.
To create a bootable DVD or USB flash drive, download the ISO file and then run the Windows 7 USB/DVD Download tool.
Once this is done, you can install Windows 7 directly from the USB flash drive or DVD.
Download: Windows 7 USB/DVD Download Tool.