Karman Healthcare Anti-Tippers for S-Ergo115

I neglected to mention that they do not look anything like the picture for they are simply painted black and there are two wheels.. The wheels in the picture look like a well made product. It also lacks the strip of Velcro running down it to make up for the tubings being much smaller than the hole it is supposed to fit. If a picture is worth 1000 words, then 992 of the words are untrue of this one.. I did manage to find an excellent replacement for these things. It needs a couple of adjustments to fit. They are a little on the heavy side, but well worth it. I will ask Wayfair how specific I can be about the location andor part number of the good ones..

An anti-Tipper is a simple device that prevents a wheelchair from accidentally toppling over backwards. The "anti-tippers" attach to the frame at the rear and, much like training wheels, prevent the chair from falling backwards, an all-too-frequent and dangerous occurrence. The good ones have a simple pushbutton latch that allows the tippers to flip out of the way when performing certain maneuvers. The only good point of these things is that it will keep you from flipping over. The bad points: The wheels are so out of true that they bind against the tubing and drag along instead of rolling. The axle is a fully threaded machine screw. The threads are guaranteed to either enlarge the hole in the hubs or the hole in the tubing. The existing hole in the tubing is so large that the screw just flops around to begin with. The other end is supposed to slide inside the lower frame rail and lock with pushbuttons. The tube on the anti-Tipper is so much smaller that Velcro is wrapped around it to make up the difference. The pushbutton lock is only on one side, the other side has an empty hole. The sloppy fit, along with the single pushbutton makes it a two-handed job to unlock. Even then, it is almost impossible to press the button in far enough without using some kind of tool. So you can pretty much forget about flipping these up and down on a routine basis. I briefly owned a fancy Invacare chair. Flipping the anti-tippers simply required reaching down, pressing the buttons, and gently rotating until it locks with the wheels up. Getting up steep hills, getting on and off the bus and negotiating the odd curb were a piece of cake. Down, down, up, up, no problem. I can just see myself on a crowded bus trying to put these things up so I can exit. Yeah, right. My S -Ergo 115 is a well engineered, uniquely designed, high performance, Everyday wheelchair made for the experienced rider. I find it hard to believe that these junky things are made by the same people to "fit" that wheelchair. Those of us who get into situations where anti-tippers are a godsend are the same ones that need the flexibility of easily disengaging them. A good set of these is essential to anyone that must get around in the real world where everything is not quite flat and handicapped accessible. I'm sure if I search hard enough, I can find something better.