With the Eisbaer Quick-Connect Extension Set, expanding the cooling loop of an Eisbaer or Eiswolf GPX-Pro cooler with additional components is simple. For example, it's easy to add another radiator, an additional cooler, or other any other components. The set consists of two 32cm long hoses in 11/8 format, encased in anti-kink springs. This prevents bending in the hoses, and thereby prevents interruptions in the water flow. Safety is our top priority. Two ends have straight connectors, pre-installed on the hoses. The only thing you need to do is screw these into the corresponding G1/4" threads. On the other end are the ends of two quick-release safety locks from the Alphacool HF series, just like the ones found on the Eisbaer or Eiswolf. That means all you have to do is open the quick-release locks on the Eisbaer or Eiswolf and screw them together with the corresponding parts in this kit and an additional product for expansion, and your loop is complete - after it's been filled, of course.