These look very expensive and are sturdy and solid wood. They match my dark walnut floors and cappuccino colored table legs. I bought the darker ones. 

The horizontal support bar has a screw on each end that fits into holes in legs. You have to twist in opposite directions. Its tricky to do, but when completed, they dont wobble and look great. Id definitely buy them again. Im more than happy with them, especially for the price when I was almost going to order custom stools for 500 each. 

They do show fingerprint marks from my five year old, but what doesnt See photo.