Dunkive water bladder hook

Thanks to ChriL for the idea. I used his hook shape and modified the interface to work with my Dunkive water bladder (a Chinese knockoff of the CNOC). Print in PLA at 20% cubic infill, 2 walls, 4 top/bottom. I thought it would break when I tried installing it, but it's just a tight fit to semi-permanently live on the sealing bar of the bladder.