They look like the Bushwacker Extend-A-Fender flares. I have them on my truck and love them. Some people say that the ATS flares are better based on the way they mount. Its all preference. The main thing to consider is that you need to get them paint properly. I paid quit a bit to have them painted and installed by a bodyshop since people had been saying that they where having problems lining them up.
I couldn't be happier with them and the looks.
You can get the bushwacker flares from 4wheelparts.com.