Robin Walker
These are exactly 20mm and the single flare is 22mm.These are tight and thin, thus showing the full size of the lobe.They’re lightweight and are just long enough to fit the o-ring comfortably.I do recommend, however, I wouldn’t use these to size up with. The reason being is that it is very difficult to size up with tunnels due to how sharp they can be.They’re perfect for hangers as well! Will be buying from this company again.
