These are garbage.  If you weigh over about 160 lbs they will fall apart.  I've had them for 4 months.  The swivel parts inside are cheap plastic and every time someone sits on a stool plastic parts break and fall on the floor.  Then the swivel mechanism doesn't work any more.  I don't think I can repair them.  Am going to contact Wayfair and see what they have to say.  They look great as long as you don't use them.  I guess you get what you pay for!