Deleted my last review because it was a whine fest. Figured it out finally. First off it's a b*tch to install and adjust. And it doesn't take a 5mm allen wrench, it takes a "T25" torx. And then I had to remove one of the TINY little C-clamps just to get it to fit tight on my saddle, which isn't some rare weird saddle, it's a Serfas with Ti rails. After all that it's a bomber little seatpost coupled with a Thomson collar so hopefully it doesn't get stolen. Originally I gave it 3 stars, but I'll kick it up to 4 now that I figured all that crap out, but I still think the design could be better especially the 5mm bolt, which is a joke. On sale for 47 bucks is nice! Or else I would have just got a Thomson.