Sturdy and well built - top mounting tubes are quite large in diameter so ensure your panniers have wide clips. Lots of hardware provided for various mounting positions and methods. Has clips that will work in the case of no rear frame mounts.
I bought this for my Salsa Fat tire bike. It fits perfect with little or no adjustment. I did have to purchase a couple minor 10-32 black screws for mounting but nothing major. A much better bargain than the Salsa rack for my bike which is on the better side of $100. Treefort has been one of my favorite sellers!!