Used AI Primes w/ Tank Brackets

I have a total of four AI Primes I am looking to sell. They have been over some frag tanks and looking to go in a different direction. I want to sell them in pairs, I have a pair of white and a pair of black. All of the tank brackets are the black color, the thumb screws on the brackets are pretty chewed up - with the salt in the  threads and the screws being pretty weak they were very tough to take in and out to move the fixtures around, these will need to be replaced. To be honest I was never really crazy about these brackets, there are some mods you can do to them to make them operate better, but I never got around to doing them. All four have been used since April. 

$365 shipped per pair. If you have any questions about them please let me know.