I almost forgot about my post. Had an idea for those with large urethra. Mine is a wee tight just under the glans at 12mm. But shaft is probably safe at 13mm without being stretched. So my current idea is to obtain stainless drinking straws and cut them down to various sizes. Since they are about 6mm there are beads with about a 6.5mm hole. It would require hot glue or 15 minute glue to assemble beads on the cut tube. Luckily 12mm beads are available, but are plastic. I was hoping for some nice glass or polished aluminum. Even with long plugs if flacid, they fall out after time. By making custom longer ones, they will stay in place. I tested with 4.5" length and it stayed without discomfort. Problem I getting use to a pee that is slightly restricted, if leaving in for an unexpected moment of play time that comes up. Cuming will be not as squirty unless making one short enough to place deeper in the shaft, as to allow the glans area to narrow the stream to squirt. Any way, that is where I am at. Still working on the idea.