I was worried this would be cheaply made but it does its job very well and appears to be well made.  The knob that tightens the screw clamp is plastic though so it may break one day.  But everything else about it is really nice.  It flexes to any position and holds it well.  I am very satisfied.  I just hope the plastic knob thingy doesn't break one day.  If it does I'll just pliers?  Seems pretty solid so far though, I turn it pretty tight.