tranny cooler question

I'm putting in a tranny cooler, and want to do it where you use the radiator as well.. basically the kit I got included an adapter that fits in to the hole on the radiator, but I'm not sure if it's right or not.. it's the right thread size but has a flanged piece on the outside where I think you attach the hose to.

Once you screw it in to the rad, the flanged piece shakes around a little bit, so I'm not sure if it seals right or not.

Basically, if you've installed a tranny cooler using the radiator, could you tell me the size adapters you got to screw in to the rad and the stock return line to hook to the hoses?

ttt .. all I need to know is the size/type fitting to plug in the rad and the tranny cooler return line to run an aftermarket cooler in series.