Thanks, Joe!
Since I teach in a city school system, I seldom, if ever, rebuild brake parts. There's always some ambulance-chasing lawyer itching to hit the school system with a big lawsuit, and one mistake on the part of one of my students could have multi-million-dollar consequences. Back when I had a real job, I used the Tru-Torque repair parts, and they had the expanders in all their kits. Never had a failure on a cylinder that was rebuildable, in my opinion, but I was pretty picky about cylinder condition.

For anyone who's considering rebuilding brake parts, remember you've got your life, and the lives of other motorists out there, in your hands. Nothing is as scary, and potentially disastrous, as a brake failure out there on the road! 100% perfect is just barely good enough!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!