The McNett Frontier Max UQC Splice Kit 1/4" is great for connecting your Frontier Pro or Frontier Max filtration systems to any hydration pack. The 1/4" size fits most packs including CamelBak and Platypus. To use just insert the Frontier UQC into your hydration system's hose or adapter and connect to the filter. A two button design makes sur you don't accidentally disconnect mid-flow and the heavy-duty gasket prevents any leaks. Bring the Splice Kit with you to refill your hydration pack quickly and easily on the go every time.