Treadstone MAFD35 Denso MAF flange 3.5" pipe

The main description and part number do not match the "smaller print" description. The flange I was sent is for a 3" diameter tube. For some reason they like using the term radius which I am assuming is a typo carried over from the treadstone website. The part I received is also slightly different looking from the picture so I'm not sure if the design changed or if this is a knock off.At the end of the day it is an aluminum weld on bung that fit for the most part.