E320 CDI exhaust ball flange size?

Does anyone know what size ball flange is on either end of the short catalytic/O2 sensor pipe on the OM648 is?

Does anyone know what size ball flange is on either end of the short catalytic/O2 sensor pipe on the OM648 is?

---------------------------------------------------------------------------
Visit this link to stop these emails: http://zpr.io/t5iAW