What size is it compared to the old one which is 29.2mm? I had one look at the new one and i honestly am not impressed with O-Rings at all on a stand. But im guessing its the sheer weight that required a metal base? Also not impressed with the small gauze on the microdose bowl either i thought a glass gauze was coming? But you know it is perfectly shaped for a small glass mine gauze? Anyone know the sea mine gauzes i am talking about?