It looks the same as what you'd find attached to an AIO liquid kit and works ... of your liquid cooling loop is the water block. It's what connects your loop to the CPU and GPU.
Product links: Hydro X Series iCUE LINK XH405i RGB Custom Cooling Kit features: Hydro X Series iCUE LINK XG7 RGB 40-SERIES GPU Water Block features: Premium CNC machined nickel-plated copper ...
A chrome finish enhances the copper cooler's durability and provides a smoother, more radiant surface than traditional nickel plating. The visual design of the GPU water cooler has been slightly ...