Had these on a bike when I was in my teens. Being extra tall 6' 5" and needing xl frames, frame shifters on a racing bike are a long way down. Bar end shifters are much easier. These are good quality and getting increasingly difficult to find. Recommended!
Looks to be really good quality and the action seems light and direct. Haven't fitted them as yet as they are in my next build hoard but looking forward to using them.