I've ordered some second-hand handlebars from one seller on eBay, and brake levers from a different seller. Both claim to be 22.2mm diameter but the clip on the levers (as photographed) will be a very tight fit if it will fit at all.
Am I right in thinking that the clip as photographed doesn't come apart into any other pieces?
The levers do say 22.2, I can't find any markings on the bars. Am I right in thinking that 22.2mm bars and 22.2mm levers go together?
Figure 1. Clip is flush with end of handlebar