These are a modern day take-off on the Italian "Verlicchi" adjustable clip on handlebar from the 70s. This is the "touring" height bar, with about a 4 inch rise possible. These handlebars are from Guzzi Laden in Germany and are of the design sold for many years by the now defunct Moto Spezial. One difference is that the handlebar tubes are now stainless steel rather than chromed steel. Medium rise "Tourer" size provides some height adjustability. Fork clamp section measures approximately 1.75 inches tall.
These handlebars are available by special order, allow a typical 2 to 3 weeks for delivery. Please read store policies regarding special order parts.