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 Eco-friendly solid thick plastic, With high flexibility and high strength, Replaceable and useful. Great replacement accessories for various kayaking. Switch the part washer with your dinghy/pontoon/SUP/board/kayak/boat/pontoon valve cap washer for an air tight fit. It's 3/4 inch in diameter on the valve side and 13/16 inch diameter on the hose side. End to end length= 1 15/16", Hose End Diameter= 13/16", Halkey-Roberts End Diameter= 13/16". Fits H3 valves for connection to electric pump compressors, Fits Naru valves on Wahoo and Wakooda iSUP. For use the H3 or Halkey Roberts Valves. In order to use a regular electrical mattress inflator on inflatable paddleboard , ten toes board, inflatable water trampoline, inflatable giant slide, inflatable gymnastic mat, air track.