Sorry mate they aren't mine. I was showing peddy the difference between the facelift and pre-facelift tips.
I will post a pic of what mine look like tomorrow. Just PM'd a few members to see where they got the ones that Im after from so I can ring around tomorrow.
The ones I have on mine at the moment (really shiny chrome) Just slide over the standard tips, but May require lube and a hammer as its always a tight fit. Then they screw up up into the bottom of the standard exhaust.
Keep yours eyes open though incase I can't find the ones I want or incase BMW quote me stupid money for a couple of exhaust tips (likely :x )