If your hose is leaking from inside the Cox Reel you need to remove the hose, clean the reel connection and the threads on the hose, and put about 7-8 wraps of tape on the hose. Use an actual wrench, 22mm, and grab onto the side of the reel after you’ve mounted the reel and really crank down on the wrench. You’re going to need to put your weight into it as it has to get TIGHT to prevent leaks.