Punk's not dead! Stick it to the man with these studded bolts by turning those unused rack and water bottle cage bosses into tools of anarchy. 

Includes 2 decorative M5 bolts. Matching belt and bracelet not included. 

Weight is 4g per bolt. Made by Runwell in Japan.

Note: You'll need to make sure your threads are clean before installing. They simply thread in, but there aren't any flats for installation/removal. Super clean design.