This is a very good and sturdy adjustable stand for any surface.  I disagree with other comments about the weight of this stand.  It is substantial but not too heavy.  The release clip and carrier holes makes it easy to raise and lower as well as carry.  I live with a disability which limits the use of my left arm/ hand and wrist.  Only for that reason is it limiting for me.  My "work around" solution is to lift and rest the left side of the stand second level while simultaneously pushing the release button and lifting it up to my desired height.  Brilliant.  I would like to see a version with a button to adjust the height.

You will not be disappointed.  The price cut is the best!!