Recently, I changed over all of my sewer hose and accessories to the RhinoFLEX SWIVEL. At a park in Las Vegas, I needed 45 feet of hose and only had 35 feet. I purchased an additional length of Rhino hose and an orange Rhino coupling that was NOT A FLEX SWIVEL. It also did not have the locks on each end. It was difficult to put on and take off as you had to rotate the entire hose when installing or removing it. When the entire hose is 30 feet long, that can be very difficult. It is much easier to rotate the coupling only. After I realized my mistake, I threw away the one that did not have the swivel and locks and purchased the proper one. Do not invest unless it has the SWIVEL ability with the LOCKS. Not worth the frustration.