Okay, so I didn't buy these for cups, I bought these for jewelry. I have a ceiling to floor shelf in my closet that has multiple shelves for shoes and things. What I don't have is a jewelry box that fits all of my extra long necklaces. I thought that I could use these, sliding them onto one of the shelves, and sort of make my own jewelry box on that shelf for my really long necklaces. IT WORKED! all of the long necklaces just hook on and each section of the shelf is so tall they hang just perfectly. A bonus is that you can still slide the hooks in and out, almost like it's a drawer but it's just holding up my jewelry. LOVE LOVE LOVE IT!!