I had been wanting to convert my Jones bike from H bar to drop bars, but there was really no shifter option for the SRAM 12 speed drivetrain that didn’t involve full upgrade to hydraulic brakes. Then I found the Gevenalle. After prompt delivery of the SRAM-compatible “Gevenalle GX” levers/shifter, I installed them in about 15 minutes. Zero derailleur adjustment needed. Perfect indexed shifting on my first test ride. The best part is being able to effortlessly move up or down the cassette as much as I want in one shot - one gear at a time or all of them. Great product.