Bugger, i went the wrong way and Scott from the supporter from the add below is sending me one that is going to be way to big, more than .5 mm.
He did have one smaller but it is on my work email, i will check first thing. I think he said he had one that was 3.18
3.10 millimetres = 0.122047244 inches or 3.10 millimetres = 122.047244 thou