Anyone know of these bolts for style 5

[JAKB]

I saw these bolts for Style 5 on another site , but I have never seen them before
any one know what they are?
thanks

http://img542.imageshack.us/img542/6141/p1000592.jpg
http://img268.imageshack.us/img268/8371/p1000603u.jpg
http://img638.imageshack.us/img638/8247/p1000619g.jpg
http://img16.imageshack.us/img16/2379/p1000623z.jpg