I don't have pics yet, but my favorite bike takes a 21.1mm stem. Last year I had a 60mm reach Nitto Technomic turned down and all was great. But, I'm changing bars and levers and, as my dexterity has improved, the 60mm reach is not enough. So rather than having my machine shop turn down a quill stem every time I change things around, I'm going to have them do a threaded-to-threadless adapter and be done with it. My bike is chrome and decidedly not modern so I sprung for this:







The lugged stem sticks up past the adapter about 5mm, so last night I purchased a handful of inexpensive 26mm diameter, liquid filled compasses. I'm going to use one in place of a fake top cap. I'll polish the adapter and I'm hoping it looks pretty good. I'm bringing the adapter and beers to my machine shop today.