I've got no connection with them other than I bought 1000lbs of lead from them a while back so I got this promotion email.
Here's the text from that email with the code you'll need:
3 Days Only!
Now through Friday , August 23rd, Save 10% on your website* order.
It is our way of saying thank you for being a loyal email subscriber!
Use website coupon code "summer10" during online checkout to save instantly.
http://www.rotometals.com is the website