And you don't want to be drilling stems.
Is your aim to use the stem/hydration with current bar?
Youâ€™re underestimating my Dremel skills! I could see reshaping and securing the mount to a different stem using a two-part epoxy, but I agree ... thereâ€™s no way I would drill into a stem.
The bar is a use Tula, which is the hitch ... if I didnâ€™t like that bar so much, I would be tempted to get the full Aeria system. But that would mean I would be spending 1G just for no reason other than running the hydration system, which is not the most sensible approach.