The knobs came in on time and were in good shape.  They look more like plastic than glass and they are smaller than I thought they would be.  The dimensions are clearly labeled so the size issue is my lack of spatial awareness rather than the products.  The screw they came with fits perfectly and secures them to the door just as it should.  The flat cut on the face of the knob seems to give off a lighter color which was not what I was hoping for.