I installed them on various locations: Walk In Closet drawers, both small and medium sized closet/storage doors, swapped out boring night stand knobs.  After losing my first order, then ending up locating it AFTER I reordered replacements and then some, Wayfair was gracious enough to tell me that they would credit me for the lost shipment, even after they learned and informed me that it was found and still being delivered.  Now I have more beautiful crystal knobs with a mirror reflection inside of them (unlike others I have seen), than I know what to do with.  I am sure I will find good use for them in the New Year.