Originally Posted by Jackster
1.5 mm works on the dinky midges we use around here.
I think this equates to a 1/16", which is the smallest I've been able to find. Some vendors size them as "Midge" size; others as "XSM", but although they don't tell you the measured size, they look the same as 1/16". I too tie mainly nymphs in # 22-28.