Gebla Crowntool for Shimkit allows you to modify some shimano brifters to run a Rohloff hub.
You also need a Gebla Shiftbox
Several Shimano shifters can be used to operate the Rohbox after replacing the original shifter mechanics by a Shimkit. The Shimkit is simple and contains needle bearings so it is robust and smooth to operate
The modification can be done by yourself, with this tool or we can do it in our workshop.
In the moment the Shimkit is compatible with all hydraulic GRX and hydraulic 105 series of shifters.