The bundles gives you access to the bits in the Customizer, with the following export options:
Download pre-supported bits (with proper part mirroring)
Download the merged miniature (wish separate base)
A screenshot of the configuration for easier file management
The purchase grants you a license for personal use of the files. For commecial use, including selling of 3d prints, please refer to the Merchant-tier license on our Patreon.