I bought a cheaper version of the inner bar end from AliExpress, just to try them out. I don't have straight bars, though, I have really swept bars (60 degrees swept). I emailed SQ labs at one stage and they recommended that the inner bar ends not go on any bar with more backsweep than 30 degrees, but I have to say I quite like the AliExpress version. They're not an exact copy of the SQ product, although they may be a copy of some other product, but they look very similar.