If you're going to assemble the chairs yourself, think twice. First of all do not follow the manual. If you do, you will have a trouble. Look at the parts and decide how to assemble the chair. Secondly, while using all bolts and nuts leave them loose until you finish assembling, otherwise you won't be able to squeeze parts into each other because of so-so Chinese workmanship. I have managed to finish this job, and it was even some fun to do. Chairs look nice.