The manufacturer sent dowel pins that were too small to assemble our chairs.  When I reached out, they responded with a rather crass email that they couldn't send new parts due to their return policy and that their QC department said I was assembling the product incorrectly.  The assembly guide isn't great but clear enough to understand where the pieces assemble.  It's also worth mentioning that judging by their QC department's response, they didn't even understand how they pieces assembled.  I finally had to find a craft store to locate the correctly sized dowel pins and complete the assembly.  Beyond that the chairs aren't even that sturdy and supported for the $300/chair price tag that we spent.I short, I would avoid any online purchases with this manufacturer.  If you have a local retailer you may have much better luck but beware.  If they wouldn't replace a mispackaged $2 assembly piece for us I'm sure it's much worse handling a larger claim.