Looking for break disk

Hi~everyone~

I saw lots of model car have this large break disk in AF.
Please tell me where can i get it????:confused:
Thank you very much.

http://email1.stut.edu.tw/~d8811034/300zx_2.jpg
http://email1.stut.edu.tw/~d8811034/r.jpg

Most of the disk you see are by Fujimi, they used to put a set in each wheel kit and some car kits. You can buy resin repops of them at www.racinresins.com.)