I can't figure out . . .

. . . exactly what those U-shaped deals are hangin' over the top frame tubes???  Maybe Kryptonite bike locks? . .  big magnets? or some kind of high tech gadget?  They come in different colors apparently.  If you want to get around in NYC and don't use the public trans systems . .  better bring your wheels with you.

I just happen to know these guys and think they are super cool.  Super nice people.  Can't wait to see them again - I just been so busy, but need to make time.  I was surfin' for Brooklyn photos . .  and found this.