Ene Ciclo Uno Bar End Shifter
 

Are you running 10, 11 or even 12 speeds and wish you had the option of using a friction shifter? Well now you can. Russ, a YouTuber whose channel is 'Path Less Pedaled' has worked with Soma Fabrications and introduced a brand-new, old fashioned shifter.
This one can pull enough cable to handle any number of cogs. And has a ratcheting action.

https://www.somafabshop.com/shop/590...-sp-8272#attr=

Here's the video:

Thanks for the link. Really cool, out of my reach but will look at that channel!