Really not fond of this. 
1. It only fits 4 regular mugs or 6 short fat mugs.
2. There's a rubber layer over the metal which makes it a pain to slide over a shelf when you get to the end. When you slide it on the shelf it makes the rubber bunch up and rip so now after trying to decide where I want to put it. It looks like it's old and battered and I haven't even used it yet.

If returning was worth the hassle I would gladly return. We'll be trying to find an alternative use for it so we don't have to put our mugs in multiple locations since they won't all fit.