Engineered to Perfection, Innovative, Cutting-Edge Design. Flex hose or hard plumbing options made simple and easy for NeuTerra's Aries 360° Return Light our Hard Plumbing Adapter is easy to install. The unique design makes for a great alternative to using flex hose. Each hard plumb adaptor kit contains six (6) adaptors and twelve (12) clamps (6 small and 6 large) for connecting 1 1/2" hose barbed fittings to recommended 1 1/2" schedule 40 PVC pipe, which is great for inventory. Please note that the installer must provide the required schedule 40 PVC pipe, schedule 40 PVC pipe fittings, PVC primer and PVC cement.