Haikeiya's 1500 Mechanical Seamless Background Materials Set

Mechanical background materials can take a lot of time to draw yourself.
So how about using a materials set like this to save some time!

1500 background materials that CAN be used for commercial purposes.

4000x4000 pixel image resolution
PNG (with transparency) file format

Official Website (Japanese Language): http://www.haikeisozai.com

* Terms of Use:

[CAN] be used
- in manga, illustrations, doujinshi, videos
- for tracing (in the above 4 mediums)
- in both all age and age restricted works

[CANNOT] be
- Redistributed / traced and redistributed AS IS.
- Uploaded to the internet AS IS / traced > AS IS.
- used to disrupt / interfere with Haikeiya's material making.

* You can upload up to 8 materials (images in the trial version only)
only for the purpose of introduction of this work.