This is such an inconvenience. I had to pay someone to assemble these chairs, and they were Not easy. 
A little later I realize that one of the chairs is missing the rivets. I contacted Customer service and they were wonderful. However the company that I got the chairs from are not so much. 
Now I have to pay someone to disassemble the chair, and wait from 8 AM till 6 PM to have them picked up.
So before you assemble them please look them over closely and know that if somethings wrong with that you will be inconvenienced to send them back..