Easy to install. Works smoothly, like a hot knife through butter. In terms of strength, it seems really durable. I tore one of the mounts due to my own error (the rail bounced off the mount). The box was closed, for some reason I decided to stand on it. 190 pounds Not a good idea, the ball bearings came loose and I had to throw the part away as I couldn't fix it. So is he strong? Yes.