H-R connector adapt inflatable boat foot pump or electric pump hoses to fit Halkey-Roberts valve. Ideal for use with electric pumps, hand pump or foot pump. It's easy to inflate and to deflate. The pump hose valve adapter is made of highly environmentally friendly plastic material, With high flexibility and high strength, Replaceable and useful. Great replacement accessories for various kayaking. It's 3/4 inch in diameter on the valve side and 13/16 inch diameter on the hose side. Fits H3 valves for connection to electric pump compressors, Fits Naru valves on Wahoo and Wakooda iSUP. For use with all Aquaglide products that use the H3 or Halkey Roberts Valves(kayaks & platinum items such as trampolines and bouncers), rubber boats, inflatable boats, inflatable kayaks, canoe, SUP, Paddle Board Pump Adapter, river rafts, fishing boats, drift boats, dinghy and so on. In order to use a regular electrical mattress inflator on inflatable paddleboard , ten toes board, inflatable GYM.