==External Links==
*[http://www.nincatalog.com/index.asp?halo=4 sin/ ''Sin'' at nincatalog.com]
*[http://www.nincollector.com/archive/releases/halo_04/halo04.htm ''Sin'' at nincollector.com]
*[http://www.amazon.com/gp/redirect.html?ie=UTF8&location=http%3A%2F%2Fwww.amazon.com%2Fs%3Fie%3DUTF8%26x%3D0%26ref_%3Dnb%5Fsb%5Fnoss%26y%3D0%26field-keywords%3Dnine%2520inch%2520nails%2520sin%26url%3Dsearch-alias%253Daps&tag=thniinnawi-20&linkCode=ur2&camp=1789&creative=390957 ''Sin'' at Amazon]