It used to be on the market under a different name, Wedge Lock or something like that. I have to tell you though, you'd be better off with a small hang on. This thing is just waiting to dump some poor soul out. It has VERY limited application. Anything that only has one point of contact on the one end is prone to twisting if you get weight near the edges. It really is a killer, even with a safety harness. I don't wear a safety harness because I know something is going to happen.... only in case something odd does happen. This thing almost guarantees a mishap.