Tunze Magnet Holders with clamp.

[kevinmichael77]

New to the hobby and just ordered a Aqua-medic Turboflotor 500 my Red Sea Max 130D. I've read this can me mounted easily to the Stevie T's media rack with the Tunze magnet holders and c-clamps but I'm not sure what are the proper sizes or where to get them. The only place I've been able to find is overseas. Any help would be great!

THanks