Today he made a small adapter for this lens. Now it fits tightly into the other adapter. The focus can be adjusted. I removed his first expansion lens, because I glued the one from the other lens and I don't want to remove it. The two outer lenses are his. They are glued. It works quite well, although only with 120W. With my other 260 and 500, it will have very high power on the same schedule, and even higher.