[CR] WTB: TA ref:24 "rattrap' chaine"

Happy New Year List!

I'm trying to hunt down a set of ref:24 TA rattrap chaine for my wife's bike.

pictured on Joel's site here:

http://www.blackbirdsf.org/ta/ref24a.html

These are the two bolts that screw into the chainring bolts nearest the crank arm on the drive side. They prevent the chain from getting stuck between the chainwheel and the crankarms. For those of you who have had this happen, I'm sure you know what a PIA this in when in the middle of a ride.

Any help would be much appreciated.

Sean Flores
San Francisco, CA