measure

So I have a Akrapovic exhaust and i'm looking to design a baffle insert to replace the one already in. Just don't like the idea of modifying the stock one in case i want to use it again. I was going to take mine out and measure it but i went to take the baffle out and no luck. The baffle screw...

Can someone please measure the stem on a MT09 mirror. I have two new ones ordered, one is approx 48mm, the other is approx 78mm. Just measure the straight bit as it is on your bike, leave the plastic covers either side as they are. Thank you in advance. Andy