I bought these knobs for white cabinets in my laundry room.  I love how they look, but Im giving them 3 stars for two reasons.  The first and primary is that the glue they used does not hold the glass to the knob.  We had every knob come off and need to be cleaned and reglued.  The 2nd is the screw that threads through the cabinet is waaay too long.  We had to figure out how to cut each one down by over an inch for a standard cabinet.  That may be good news for some people with thicker cabinet bases, etc.  But it was a bit of a problem for us at the time.  We had to buy a tool to cut the screws down.