Add a comma "," to the end of the link in the browser, then it works. The forum knocks this off the link for some reason.
There are these too, you get more and they are supposed to be stronger. They are the ones that come on the Worlds kit.
http://www.mirageracing.com/product/HB61582,
http://www.mirageracing.com/product/HB61581,
Need to add the comma to those too in the address bar on your browser.
G