Shuckra

A shuckra is a weapon of Indian heritage and consists of a series of metal rings on a wire connected to a (metal) handle.By locking the handle and pulling on an internal wire the device becomes taut and may be used as a stabbing weapon.

Sources

* [http://www.doe.state.in.us/isssa/pdf/FBI-weapons.pdf FBI guide to concealable weapons]
* [http://www.foxnews.com/story/0,2933,93971,00.html FOX News:FBI Catalogs Possible Terrorist Weapons]