The C7 Leafield Valve Adapter makes filling your inflatable a breeze. A quick twist seals the Leafield C 7 Valve Adapter to your boat's Leafield C 7 Valve for easy solo inflation with zero leakage. This adapter is especially helpful with high pressure drop stitch inflatables such as the NRS Big Earl SUP Board, the NRS Whip Body Board and the NRS GigBob Personal Fishing Cataraft. The threaded male end screws into your Leafield C 7 Valve, sealing the O ring for an airtight, secure connection. Includes a 2 vinyl hose which allows you to connect the adapter to almost any pump. Sturdy plastic construction withstands use and abuse.