The pots look much better than the picture shows.  They are made to properly fit several sizes of railing.  The picture doesn't show those-the picture looks like it only would work for wide rails.  Having wide rails, I ordered them....and they are perfect.  I saw these at a garden center for twice the price..exact same product.  The Union Red which I purchased had a different color description on the ones at thr garden center, but they are the same-beautiful!

Pros: Very easy to install.  Beautiful color.  Stay put on the railing.