The assembly for this is a disaster.  I've bought and assembled many pieces of prefab items over the years.  This is the worst. Pull up the asembly instructions posted on Wayfair. There a guide holes on the cross stretchers, but they are very narrow and deep.  A few didnt go all yhe way through.  There are NO GUIDE HOLES  on the leg frame.  You will need to hand screw a very cheap m4x38mm screw into a pretty substantial piece of wood.  Because of the depth and narrow nature of the guidehole neither of my power drivers or any of my bit extensions could reach.  Because of the cheap nature of the screw, a few slips and its it's completely stripped.  We bought these because of the supposed amount of weight that the are listed to support.  It will be impossible to assemble these properly and achieve  that.  Either pay the huge $$$$$$ to have them assembled,  or look elswhere.  This is my absolute worst experience with a Wayfair product.