I love these bar stools!  They are very heavy duty and will last forever.  They raise and lower depending on your need. In the past I have had stools lose screws or the welding piece comes apart from repetitive use and standing on the rungs of the stool.  These are so well built that I cannot imagine any of that happening to these.  They are, however, not too heavy that you cannot move them with ease.  I have had these about 5 months and they still look new, I just LOVE these!