Exhaust flanges for the 2.8l - 3.2l 24v VR6. They're made from 304L stainless and 100% machined, not laser or water cut. Port design transitions from square to round. .5" overall thickness with .25" pockets. Port recess is .1" deep and can accommodate 1.5" sched10 pipe or 1.75" 16g tube.