I ordered 3 sets of chairs but one of the sets came missing parts (side rails) as seen in picture no.2 above. That means I am only able to assemble 2 of the 3 sets of chairs ordered.  I am waiting for Wayfair to rectify this problem, hopefully it will be sorted quickly. Its really annoying though that they send out stuff without having done Quality Control! 
Wayfair sent me replacement chairs and even the replacement pair had not been quality checked because the wood is not cut correctly and the chairs seriously wobble! I am sending them back - really awful quality!!