Tapered Elephant Dart Penis Plug is made specifically with your elephant trunk in mind. 🙂
This plug is 10CM (4\ ») long from top to bottom, with about 8CM (3.2\ ») of insert able pleasure. The tip is just over 3.3mm (0.13\ ») and graduates up to almost 8mm (0.3\ »). If you want to get straight to it, then get Tapered Elephant Dart Penis Plug.