?? 2 the cinch/clamp for the IORIS grab the straps in the wrong direction. You have to feed the strap into the clamp from the back. I would have been fine with the IORIS clamps if i had not previously bought a 5BILLION 木製体操吊り輪 - オリンピック体操リング. The 5BILLION cinch/clamps grab the straps properly when you feed/set the straps into the front of the clamps. Makes it much easier to set and adjust. Simple difference in design but makes difference in ease of use.