This thing is so flimsy! Everything is perfect except the spring loaded bar does not fit snuggly into the other bar even with their transition plastic piece so the entire thing just wiggles and wobbles at the joint. This thing is also super awkward to get the right tension with certain heights. They have various length bars but depending on whether you are at the limit of each length you get really low tension. Mine either needed to be fully spring loaded or not have enough tension. Oh yeah and when you fully compress the spring it pushes through the end of the bar into the next bar which means you lose tension. It's so close to useful except the tension bar which rendered this thing useless to me. Maybe if I felt feisty I could just cover that joint with a ton of tape to hold it, but no thank you.