I have not used this product for several years. I thought I would be smart and save money. Well, let me tell you, when I switched to the towbar that stays on the tractor, it came with a towbar. Well, it didn't take long for me to realize how stupid I was. This greatly simplifies the fitting of the towbar, especially as you get older. After testing the new system on the road, I bought a set of these quick couplers to attach my old hitch that stays on the towed vehicle. Now it's much easier to…