I think it's a 24mm! I just measured it.

The larger ones I have are http://www.canecreek.com/crosstop_lvr.html I fifgured they are the 36mm ones. The smaller one I have is the http://www.billys.co.uk/english/grou...nkpfcfuuf0ava2. I guess I must have the 22mm ones.

I guess I need to hunt down a 24mm one?

Any suggestions?

Thanks again all