Being flexible, this connects the water valve to the hose reel inlet and saves you worrying about lining pipework up or hiring a plumber. Note - strangely, our swinging hoses reel need the 25mm pipe (no, we don't understand that, either!) If the connection does not quite fit, just get an adaptor or reducer from your plumbers merchant
NOTE for use with most hose reels - choose 19mm or 25mm