This is a wrench designed to open and close the valves at the back of a fountain head on Cornelius or Remcor beverage dispensers (e.g. ED 250, ED 300). Will need to be printed out of something stronger than PLA, as it will snap after only a few uses.
Design is based on the officially produced wrenches that my company purchased for our service technicians. This wrench can be viewed here: https://www.marmonlink.com/product/cornelius-tool-wrench-valve-beverage-70798-1001588
The author marked this model as their own original creation.