what are these binding bolts called?
 

I lost 1 of the 4 and need to reorder, but don't have a clue what they're called. No markings or branding on them. Or, is there another good binding bolt system that works pretty well without a screw driver or other tool to fasten them to the board?

Riding on circa 2009 Liquid Force Shanes
http://i46.tinypic.com/jtuzjb.jpg

Liquid Force Cam Locks- http://www.boardstop.com/product_inf...oducts_id=3338