Hey Guys, if you have ever try to service your Getrag 260 or 240 transmission you will need to modify a 30mm socket.
before facing it and turning it down.
after, notice the tapered part of the socket is gone.
after this picture I just deburred the ends and sanded down the inside.
now you can use your new tool and break the 123 ft lbs nut on the back of your trans,
then in some cases you have to use some sort of puller or gear puller to remove the output flange if its stuck.