The unior isn't that great for getting things started, I've got one and even with the pin fully extended the nipple falls right off if you're trying to insert at an angle. I typically use another spoke, thread the nipple on one turn from the back and insert into the rim. Shop I was at had an interesting one that had a center piece that was spring loaded and locked into place when pushed into the end of the nipple, once you pulled it out you gave a small twist to reset it. Don't know where or who made it and have only ever seen one. not certain it was actually designed for spoke nipples either.