For some reason i missed the cinder block part and only read concrete. I dont think i have ever mounted anything to cinder block so i cant make any assumptions about what will work. I do know that townhouses here in Chicago are built with cinerblock and i have seen tapcons used to secure things to it. Most of these things were like plumbing pipe that was ran vertically so there wasnt much weight on it.
Avid Stamp Collector - I really love 39 Cent Stamps